Oklahoma Genealogy

USA (1,403,636) > Oklahoma (24,612)

By Record Type

Oklahoma Genealogy Research Guide

If you're not sure which records would be helpful, you can try our Ancestor Source Finder tool.

By County

By City

Oklahoma Genealogy Research Guide

Quick Facts

Oklahoma was assembled from two jurisdictions that kept records in entirely different ways: Oklahoma Territory in the west, opened to settlers by land runs and lotteries beginning in 1889, and Indian Territory in the east, governed by the Cherokee, Choctaw, Chickasaw, Muscogee (Creek), and Seminole nations. The two were joined at statehood in 1907. Knowing which side of that line an ancestor lived on, and in which year, is the key to nearly every Oklahoma record.

• Capital: Oklahoma City. Guthrie was the territorial capital and the first state capital; the seat of government moved to Oklahoma City in 1910.
• Statehood: November 16, 1907, the forty-sixth state, formed by uniting Oklahoma Territory and Indian Territory — the “Twin Territories.”
• Counties: 77. The first counties of Oklahoma Territory were laid out in 1890 and at first carried numbers, and the counties opened afterward carried letters (County A through County Q) until the voters gave them permanent names. The state constitution created seventy-five counties at statehood in 1907; Harmon County followed in 1909 and Cotton County, the last, in 1912.
• Land type: Oklahoma is a federal (public-domain) state, not a state-land state. Original title passed from the United States, so the first record of ownership is normally a federal land patent or a tribal allotment rather than a state grant, and land is described by township, range, and section measured from the Indian Meridian.
• Nickname and motto: the Sooner State; the state motto is Labor Omnia Vincit ("Labor Conquers All Things").
• Where records live: deeds are recorded by the county clerk, and marriages, divorces, probate, and court records are kept by the court clerk in each county; births and deaths are held by the state. Oklahoma has no city that keeps vital records separately from the state.

Libraries and Archives

Oklahoma’s research collections cluster in Oklahoma City and Tulsa, and one repository — the Oklahoma Historical Society — holds record groups found nowhere else, above all the archives of the tribal nations. County courthouses hold the deeds, marriages, probate, and court files for their own areas. The principal Oklahoma repositories include:

• Oklahoma Historical Society Research Center (Oklahoma City) — the indispensable repository: the Indian Archives (tribal government, school, citizenship, and court records of the Five Tribes and other nations), territorial records, newspapers, photographs, and manuscript collections.
• Oklahoma Department of Libraries — the State Archives, holding permanent state-government records from territorial days forward, including Confederate pension applications, land-office registers, and legislative records.
• Oklahoma Genealogical Society — the statewide society, with indexing projects, a quarterly journal, and published record abstracts.
• National Archives at Fort Worth — the federal branch for Oklahoma: Dawes enrollment and application jackets, land-allotment jackets, Bureau of Indian Affairs agency records, and federal court and naturalization records. Homestead and other land-entry case files are held by the National Archives in Washington, D.C.
• National Archives at Kansas City — the case files of the U.S. Court for the Western District of Arkansas at Fort Smith, which had jurisdiction over Indian Territory.
• University of Oklahoma Western History Collections — manuscripts on the tribal nations, missions, and pioneer settlement, including the Indian-Pioneer Papers, a large body of interviews with early residents of both territories.
• Metropolitan Library System (Oklahoma City) and the Tulsa City-County Library — the two largest public genealogy collections, with strong American Indian and Dawes research support.
• Gilcrease Museum (Tulsa) — archives and manuscripts on Native and African American history in Indian Territory.
• The FamilySearch Library and its worldwide FamilySearch Centers hold extensive Oklahoma microfilm and digital collections, and the county clerk and court clerk in each county hold the local deed, marriage, probate, and court records.

Major Websites

These sites host digitized Oklahoma records and indexes. Subscription sites are marked ($).

• FamilySearch — free; the backbone finding aid, with the FamilySearch Wiki, catalog, and large digitized collections of Oklahoma marriage, probate, land, church, and tribal enrollment records.
• Ancestry ($) — extensive Oklahoma census, Dawes enrollment, allotment, marriage, military, and tax collections.
• MyHeritage ($) — Oklahoma marriages, censuses, and the Dawes Rolls.
• Fold3 ($) — Dawes enrollment packets, the Guion Miller Roll, and federal military service and pension files.
• Findmypast ($) — United States marriage and newspaper collections covering Oklahoma.
• Gateway to Oklahoma History — free; the Oklahoma Historical Society’s digitized newspapers, photographs, and documents from the territorial period onward.
• Digital Prairie — free; digitized state records from the Oklahoma Department of Libraries, including Confederate pension files and territorial material.
• The Encyclopedia of Oklahoma History and Culture — free; authoritative articles on the tribes, counties, towns, land openings, and events that produced the records.
• Oklahoma State University digital collections — free; The Chronicles of Oklahoma, tribal law compilations, and Kappler’s Indian Affairs: Laws and Treaties.
• Bureau of Land Management General Land Office Records — free; federal land patents, survey plats, and field notes.
• Chronicling America — free; the Library of Congress newspaper archive, with Oklahoma and Indian Territory titles.
• Internet Archive and HathiTrust — free; digitized Oklahoma and tribal histories, statute volumes, and published record abstracts.
• Find a Grave and BillionGraves — free; cemetery listings, photographs, and transcriptions.

Law and Government

Oklahoma’s two territories and five tribal nations each legislated separately, so the old statute books and tribal codes are working research tools: they show which court kept which record, when registration began, and how citizenship and land descended. Most of the foundational texts are digitized and free to read.

• The Statutes of Oklahoma, 1893 — the territorial code, including the civil and probate procedure that governed the western half of the future state; free on HathiTrust, which also holds the earlier Statutes of Oklahoma, 1890.
• The organizing federal statutes — the General Allotment (Dawes) Act of 1887, the Oklahoma Organic Act of 1890 (which created Oklahoma Territory and attached the Panhandle), the Curtis Act of 1898 (which extended federal law over Indian Territory and abolished the tribal courts), and the Enabling Act of 1906 (which authorized statehood) — are printed in the United States Statutes at Large, digitized free on the Internet Archive and HathiTrust.
• Kappler’s Indian Affairs: Laws and Treaties — free; the standard compilation of the treaties and federal statutes that created and dismantled the tribal nations’ land base.
• Constitution and Laws of the Cherokee Nation and the Constitution and Laws of the Muskogee Nation — free on the Internet Archive; the Constitution and Laws of the Choctaw Nation is free at the Library of Congress.
• The Library of Congress collection of Native American Constitutions and Legal Materials and the University of Oklahoma’s Native American Constitution and Law Digitization Project — free; the constitutions, codes, and court acts of the Chickasaw, Seminole, and other nations.

Vital Records (Birth, Marriage, Death)

Statewide registration of births and deaths began in October 1908, less than a year after statehood, but compliance came slowly: registration was made compulsory in 1917, and it was the late 1920s before most events were being recorded, with some counties lagging longer. For the territorial decades and the early state years, church, census, marriage, and probate records are the practical substitutes. Oklahoma also closes birth and death certificates more tightly than many states.

Births and deaths. The Oklahoma State Department of Health holds birth and death records from October 1908. Birth records become open after 125 years and death records after 50 years; more recent certificates are issued only to the person named, to close family, or to others who can show a direct interest, and a fee applies. Delayed birth certificates — filed later in life by people born before registration who needed proof of birth for a pension, a job, or an allotment — are held by the same office and often name parents and birthplace. The state’s free index, OK2Explore, searches births more than twenty years old and deaths more than five years old and supplies the details needed to order a copy.

Marriages and divorces. Marriage licenses and returns are kept by the court clerk of the county that issued the license, generally from the organization of the county in the 1890s or at statehood, and divorce files are in the same office among the district court records. In Indian Territory before statehood, marriages of United States citizens were recorded by the federal courts at Muskogee, South McAlester, and Ardmore, while the tribal nations recorded the marriages of their own citizens; those records are largely in the Indian Archives of the Oklahoma Historical Society.

• Marriages: Oklahoma, Marriages, 1870–1930 — free on FamilySearch, which also holds browsable county marriage records; the same index is on Ancestry ($) and MyHeritage ($).
• Deaths and burials: Oklahoma Deaths and Burials, 1864–1941 — a free index on FamilySearch drawn from cemetery, church, and undertakers’ records, useful for deaths that were never registered with the state.
• Births and deaths (index): OK2Explore — free; the state health department’s searchable index of the certificates it holds.

History and Timeline of Major Events

Key dates that shaped Oklahoma’s jurisdictions and records:

• 1803 — The region passes to the United States in the Louisiana Purchase.
• 1820s–1842 — The Five Tribes are removed from the Southeast over the Trail of Tears to Indian Territory, where each nation governs itself, keeps its own citizenship rolls, and runs its own courts and schools.
• 1861–1865 — The Civil War divides Indian Territory: Confederate tribal regiments, including Stand Watie’s Cherokees, fight against Union Indian Home Guard regiments raised from the same nations.
• 1866 — The Reconstruction treaties require the Five Tribes to free the people they had enslaved (and, in varying degrees, to adopt them as citizens) and to cede the western half of Indian Territory, where other tribes are then resettled.
• 1870s–1880s — The Chisholm and Western cattle trails cross the territory, and “Boomer” agitation builds to open the Unassigned Lands to settlement.
• April 22, 1889 — The first land run opens the Unassigned Lands; Guthrie and Oklahoma City are settled in a single day.
• 1890 — The Organic Act creates Oklahoma Territory, attaches No Man’s Land (the Panhandle) to it, and provides for a territorial census taken that June.
• 1891 — A land run opens the Iowa, Sac and Fox, and Pottawatomie-Shawnee lands.
• 1892 — A land run opens the Cheyenne and Arapaho lands in the west.
• 1893 — The Cherokee Outlet run, the largest of them all, opens the Cherokee Strip; the Dawes Commission is created to enroll the Five Tribes and allot their land.
• 1895 — The Kickapoo run, the last of the land runs.
• 1896 — The Supreme Court awards Old Greer County, long claimed by Texas, to Oklahoma Territory.
• 1898 — The Curtis Act extends federal law over Indian Territory and abolishes the tribal courts.
• 1898–1914 — The Dawes Commission enrolls the citizens and freedmen of the Five Tribes and allots their lands in severalty.
• 1901 — The Kiowa-Comanche-Apache and Wichita-Caddo lands are distributed by lottery at El Reno and Lawton, replacing the chaotic runs.
• 1905 — The Sequoyah Convention at Muskogee drafts a constitution for a separate Indian-Territory state; Congress declines.
• 1906 — The Big Pasture is sold by sealed bid, the last major opening; the Enabling Act authorizes a single state.
• November 16, 1907 — Oklahoma Territory and Indian Territory are joined as the forty-sixth state.
• 1908 — Statewide registration of births and deaths begins in October.
• 1910 — The capital moves from Guthrie to Oklahoma City.
• 1921 — The Tulsa Race Massacre destroys the Greenwood district, the city’s Black business and residential center.
• 1930s — Drought, the Dust Bowl, and the Depression drive heavy out-migration, especially from the western counties.

Census Records and Substitutes

Federal censuses were taken every ten years from 1790 through 1950, but the area that became Oklahoma appears in only a few of the early ones, and the tribal population was generally excluded until 1900. The federal schedules are free on FamilySearch and on the National Archives 1950 census site, and are also searchable on Ancestry ($) and MyHeritage ($). What each enumeration offers varies sharply by year:

• 1860: the non-Indian residents of the region were enumerated as the “Indian Lands” west of Arkansas, filmed with Arkansas; a slave schedule accompanies it. Tribal citizens were not listed.
• 1890 (federal): the population schedules were destroyed, and nothing survives for Oklahoma or Indian Territory. The 1890 special schedule of Union veterans and widows, however, does survive and is a rare census-year source.
• 1900: the first full federal census of the area, taken separately for Oklahoma Territory and Indian Territory, with Greer County enumerated under Oklahoma Territory. It names tribal citizens and freedmen and gives month and year of birth.
• 1910: the first federal census of the state of Oklahoma, followed by 1920, 1930, 1940, and 1950.

Territorial and special censuses. Oklahoma Territory and the tribal nations took their own enumerations, and these are the most valuable substitutes for the missing federal years:

• 1890 Oklahoma Territorial census: a June 1890 enumeration of the seven original counties, recording name, age, relationship to head of household, birthplace, years in the United States and in the territory, and literacy — a genuine substitute for the destroyed federal schedules. The index is free at the Oklahoma Historical Society; index and images are on Ancestry ($).
• 1907 territorial census: taken on the eve of statehood, but only the Seminole County schedule is known to survive; it is included in the Ancestry collection above.
• Tribal censuses and rolls: the nations counted their own citizens — the Cherokee censuses of 1880 and 1890 are the fullest — and the Bureau of Indian Affairs took annual Indian censuses of the reservation tribes from 1885 to 1940. The Dawes enrollment records of 1898–1914 function as a census of the Five Tribes and their freedmen; see the Ethnic/Minority section for the collections.

Substitutes. Where censuses are missing, city directories for Oklahoma City, Guthrie, Muskogee, and Tulsa, county tax rolls, and the land-opening records (homestead entries and allotment files, both of which fix a person to a place in a year) are the best substitutes. The 1933 unemployed relief census, held by the Oklahoma Historical Society, covers much of the state during the Depression.

Church Records

Because civil registration began only in 1908, church registers are the most important substitute for vital records before statehood, and in Indian Territory the mission churches were also schools and community centers, so their records reach deep into tribal families. The Baptist and Methodist churches were the largest denominations, with substantial Roman Catholic, Presbyterian, Disciples of Christ, Lutheran, and Mennonite communities in the settlement counties.

• Mission records: Presbyterian, Baptist, Methodist, Moravian, and Quaker missionaries worked among the Five Tribes and later among the Plains nations, and their baptismal, membership, and school registers are described among the Oklahoma Historical Society manuscript collections.
• Online: Oklahoma Church Records, 1897–1984 — free on FamilySearch; an assembled collection of registers from several denominations, and thousands of additional congregational registers can be found through the FamilySearch Catalog by county and town.
• Methodist: the annual conference journals, including those of the Indian Mission Conference, are digitized free by the Oklahoma City University Archives.
• Catholic: parish registers of baptisms, marriages, and burials are held by the parish or by the diocesan archives — the Archdiocese of Oklahoma City and the Diocese of Tulsa.

Court Records

Court records reach well beyond lawsuits into estates, guardianships, marriages, naturalizations, and land. Oklahoma’s courts came in layers — federal courts sitting outside the territory, tribal courts, territorial courts, and finally state courts — and knowing which court had jurisdiction over a person in a given year tells you where the file is.

• U.S. Court for the Western District of Arkansas at Fort Smith — held jurisdiction over Indian Territory for much of the nineteenth century, most famously under Judge Isaac C. Parker (1875–1896). Its case files name defendants, victims, jurors, and witnesses from across the territory and are held by the National Archives at Kansas City.
• U.S. Courts for the Indian Territory, from 1889 — sitting at Muskogee and later at South McAlester and Ardmore; they recorded marriages, probates, and naturalizations for people who were not tribal citizens. The records are with the National Archives (Record Group 21).
• Tribal courts — the Cherokee, Choctaw, Chickasaw, Creek, and Seminole nations ran district and supreme courts with jurisdiction over their own citizens; Congress narrowed their authority from 1885 and abolished them under the Curtis Act of 1898. Surviving dockets and case files are in the Indian Archives of the Oklahoma Historical Society.
• Oklahoma Territory district courts, 1890–1907 — civil, criminal, and probate jurisdiction in the western counties, with naturalizations among their files.
• District and county courts, since statehood in 1907 — the district court in each county handles civil, criminal, and divorce cases, and the county court took probate and guardianship; the court clerk in each county is the custodian.

Ethnic/Minority Records

No state depends more on ethnic records than Oklahoma. The tribal nations generated citizenship rolls, censuses, court records, and allotment files of a depth found nowhere else, and their freedmen and the state’s all-Black towns produced a distinctive African American record trail.

• The Five Tribes. The Cherokee (northeast), Choctaw and Chickasaw (southeast), and Muscogee (Creek) and Seminole (east-central) nations governed the eastern half of the state. The central record is the Dawes Commission enrollment of 1898–1914: the enrollment cards, the application jackets behind them (often containing testimony, birth and death affidavits, and family detail), and the Final Rolls of Citizens and Freedmen. The Final Rolls are searchable free through the National Archives and the Oklahoma Historical Society; the Native American Enrollment Cards for the Five Civilized Tribes, 1898–1914 ($) are on Ancestry, and the application and allotment jackets are also on Fold3 ($).
• Earlier rolls. The Old Settler Roll (Cherokees who came west before removal), the Guion Miller Roll (Eastern Cherokee claims), and the Wallace and Kern-Clifton rolls of Cherokee freedmen predate the Dawes enrollment and often reach a generation further back; they are on Fold3 ($) and in the Indian Archives at the Oklahoma Historical Society.
• The other nations. The Kiowa, Comanche, and Apache (southwest); Cheyenne and Arapaho (west); Osage, Pawnee, Ponca, and Otoe-Missouria (north-central); Sac and Fox, Iowa, Kickapoo, and Potawatomi (central); and the Quapaw, Seneca-Cayuga, Wyandotte, Ottawa, Peoria, and Modoc (northeast corner) are documented chiefly in the Bureau of Indian Affairs agency records, the annual Indian censuses of 1885–1940, and the allotment registers. The Indian Censuses and Rolls, 1851–1959 ($) index much of this material, and the originals are at the National Archives at Fort Worth.
• Freedmen of the Five Tribes. People formerly enslaved by the tribal nations were freed and, under the treaties of 1866, admitted to citizenship in varying degrees; they were enrolled by the Dawes Commission on separate freedmen rolls and received allotments. These rolls, with the application jackets behind them, are among the richest African American records anywhere for the period.
• African Americans and the all-Black towns. Between the Civil War and the 1920s, Black settlers founded dozens of all-Black towns in Oklahoma — among them Boley, Langston, Taft, Rentiesville, Red Bird, Clearview, Tullahassee, and Tatums — and more than a dozen survive. Town records, newspapers, and church registers are held by the Oklahoma Historical Society, which also documents the Greenwood district of Tulsa and the 1921 Tulsa Race Massacre; further material is on Digital Prairie.
• Immigrant communities. The land openings drew German, Czech, Mexican, Italian, Swedish, and Polish settlers, along with Germans from Russia and Mennonites; they appear in county marriage and land records, in church registers, and in the naturalization files described below.

Immigration and Naturalization

Oklahoma has no seaport, so there are no passenger arrivals to find here; its people came overland, drawn by the land runs, the lotteries, the coal mines of the southeast, and the oil fields. The immigrant’s record in Oklahoma is the naturalization file, and it was created in whatever court was closest.

• Before September 1906: any court of record could naturalize — the Oklahoma Territory district courts, the U.S. courts for the Indian Territory, and the county courts — so declarations of intention and petitions are scattered among all of them, and the papers are brief.
• After September 1906: naturalization was standardized under federal supervision and the papers become much fuller, giving the immigrant’s birthplace and date, ship and port of arrival, and the names of spouse and children.
• Where the records are: the federal naturalizations are with the National Archives at Fort Worth (Record Group 21); microfilmed territorial and county naturalization records are at the Oklahoma Historical Society and free on FamilySearch.

Land Records

As a federal (public-domain) state, Oklahoma’s land title began with the United States, and it flowed to individuals along two entirely separate tracks: homestead entries and purchases by settlers in the lands thrown open between 1889 and 1906, and allotments to enrolled tribal members. The two produced different records in different places, so identify which one applies before searching. Land is described by township, range, and section from the Indian Meridian, and later transfers between individuals are recorded as deeds by the county clerk.

Where the records are kept.

• Federal patents: the first transfer out of the public domain is searchable by name at the Bureau of Land Management General Land Office Records site, which also carries the survey plats and field notes; it is free.
• Homestead case files: the patent is only a receipt — the case file behind it holds the application, proof of residence and cultivation, witness testimony, and often naturalization papers. These land-entry files are held by the National Archives in Washington, D.C., and are ordered by the legal land description taken from the patent.
• Allotment records: for members of the Five Tribes, the land-allotment jackets document the selection, contest, and patenting of the allotment — Land Allotment Jackets for Five Civilized Tribes, 1884–1934 ($); the originals, and the allotment registers of the other nations, are at the National Archives at Fort Worth and the Oklahoma Historical Society.
• County level: deeds and mortgages are recorded by the county clerk in each county, from the county’s organization forward.
• State level: territorial land-office registers and school-land records are held by the Oklahoma Department of Libraries and the Oklahoma Historical Society.

The land openings. Each opening had its own rules, its own land office, and its own paperwork, and knowing which opening covered an ancestor’s land tells you which records to expect.

• Land Run of 1889: on April 22 the Unassigned Lands in the center of the future state were opened to a run for 160-acre homesteads; Guthrie and Oklahoma City were laid out within hours, and the settlers who slipped across the line early gave the state the name “Sooner.” Townsite claims here generate their own files, separate from the rural homestead entries.
• Openings of 1891: the Iowa, Sac and Fox, and Pottawatomie-Shawnee reservations were opened by run after allotment to the tribal members, a pattern repeated in each later opening: allotments first, surplus land to settlers.
• Land Run of 1892: the Cheyenne and Arapaho lands in western Oklahoma, a very large but thinly claimed opening, since much of the land was better suited to grazing than to farming.
• Cherokee Outlet Run of 1893: the largest of the runs, opening the Cherokee Strip along the Kansas line, together with the Pawnee and Tonkawa lands; registration booths and certificates of eligibility were required, which means most participants left a paper trail whether or not they got a claim.
• Kickapoo Run of 1895: the last and smallest of the runs, in the central part of the territory.
• Lottery of 1901: the Kiowa, Comanche, and Apache lands and the Wichita and Caddo lands were distributed by a drawing registered at El Reno and Lawton, replacing the disorder of the runs; the registration lists name many more people than actually received land.
• Big Pasture sale of 1906: the last major opening, in the southwest along the Red River, sold by sealed bid rather than given away, so the records are purchase records.
• No Man’s Land (the Panhandle): the Public Land Strip lay outside any state or territory and was settled by squatters who organized their own claim boards and the short-lived Cimarron Territory; it was attached to Oklahoma Territory in 1890 as Beaver County and homesteaded through the 1890s, so early claims may predate any official record.
• Old Greer County: settled under Texas law and claimed by Texas until the Supreme Court awarded it to Oklahoma Territory in 1896; settlers were then allowed to perfect their claims as homesteads, and Texas-era records for the area exist alongside the federal ones.

Online, the General Land Office Records site is the starting point for patents, and FamilySearch Full-Text Search makes many unindexed county deeds and land papers searchable by every name they contain, including grantors, grantees, witnesses, and neighbors.

Military Records

Oklahomans and their tribal predecessors served in every American conflict from the Civil War forward, and the records run from tribal regiments raised in Indian Territory to one of the best-known National Guard divisions of the Second World War.

• Civil War: both sides recruited in Indian Territory. The Union raised the Indian Home Guard regiments, and the Confederacy raised Cherokee, Creek, Choctaw, Chickasaw, and Seminole regiments, including the command of Stand Watie. Compiled service records for both are on FamilySearch and Fold3 ($), and the tribal muster rolls and claims are in the Indian Archives at the Oklahoma Historical Society.
• Confederate pensions: Oklahoma granted pensions to Confederate veterans and their widows who were living in the state, though the war long predated it. The applications, which are rich in family detail, are free on Digital Prairie and indexed free on FamilySearch.
• Spanish-American War: volunteers from both territories served in 1898, several of them with the Rough Riders; service abstracts are among the Oklahoma Historical Society’s military records.
• World War I and World War II: draft registration cards cover men across the state and are indexed free on FamilySearch; the Oklahoma Historical Society holds service and casualty records and the state adjutant general’s files.
• The 45th Infantry Division: the Oklahoma National Guard division, the “Thunderbirds,” fought through Sicily, Italy, France, and Germany and later in Korea; its history, rosters, and unit records are documented by the Oklahoma Historical Society.

Probate Records

Probate — wills, administrations of intestate estates, and guardianships of minors — is among the richest sources for family relationships, and in Oklahoma it carries an extra layer found almost nowhere else: the estates and guardianships of tribal allottees whose land was held under federal restriction.

• Indian Territory, before 1907: the tribal courts and then the U.S. courts for the Indian Territory handled estates; the surviving files are in the Indian Archives at the Oklahoma Historical Society and with the National Archives.
• Oklahoma Territory, 1890–1907: probate was a function of the territorial district courts under the territorial statutes.
• Since 1907: probate belongs to the county court in each county (now exercised through the district court), and the court clerk holds the estate file — petition, will or administration, bond, inventory, and final decree — which usually names the heirs.
• Restricted Indian estates and guardianships: when an allottee died or a minor inherited, the estate was administered in the county court under Bureau of Indian Affairs oversight, producing detailed heirship determinations that name whole families across generations. These files are in the county courts, in the Indian Archives, and among the BIA records at the National Archives at Fort Worth.

Online, county probate records are browsable free on FamilySearch, and FamilySearch Full-Text Search makes many unindexed wills and estate files searchable by every name they contain.

Tax Records

Tax lists place a family in a particular township and year and are useful where censuses or deeds are missing; a run of consecutive years can show when a young man came of age, when a family arrived, and when a landowner died and left heirs. Oklahoma’s tax records begin late, because the tribal nations did not tax land in the way the territories and the state did.

• Territorial and county tax rolls: assessment and tax rolls of Oklahoma Territory and of the counties are held by the Oklahoma Historical Society and the Oklahoma Department of Libraries; later rolls are with the county assessor and county treasurer.
• Tribal payment and permit records: in place of tax lists, the nations produced per-capita payment rolls, permit and intruder records, and grazing leases, all of which name residents; they are in the Indian Archives at the Oklahoma Historical Society.
• Federal assessment lists: the U.S. IRS Tax Assessment Lists, 1862–1918 ($) cover the federal income, license, and luxury taxes; the Civil War–era lists do not extend to Indian Territory, but the later Oklahoma lists do.