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Directory of Portsmouth and Scioto County, 1899 LDS Genealogy 
Directory of Portsmouth and Scioto County, 1899 Internet Archive
Polk's Portsmouth, Ohio, city directory : including New Boston, Sciotoville and Star Yards, also a buyers' guide and a complete classified business directory FamilySearch Library
Portsmouth (Ohio) city directories FamilySearch Library
Portsmouth City Directory 1910 MyHeritage
Portsmouth City Directory 1912 MyHeritage
Portsmouth City Directory 1914 MyHeritage
Portsmouth City Directory 1918 MyHeritage
Portsmouth City Directory 1924 MyHeritage
Portsmouth City Directory 1929 MyHeritage
Portsmouth City Directory 1932 MyHeritage
Portsmouth City Directory 1939 MyHeritage
Portsmouth City Directory 1944 MyHeritage
Portsmouth City Directory 1947 MyHeritage
Portsmouth City Directory 1949 MyHeritage
Portsmouth City Directory 1952 MyHeritage
Portsmouth City Directory 1956 MyHeritage
Portsmouth City Directory 1957 MyHeritage
Portsmouth City Directory 1959 MyHeritage
Portsmouth, OH 1858/59 City Directories Allen County Public Library
Portsmouth, OH 1908-1935 City Directories Allen County Public Library
Portsmouth, OH 1937, 1939, 1941-1942, 1944, 1947, 1949, 1952, 1954, 1956-1957, 1959-1960 City Directories Allen County Public Library
Portsmouth, OH Business Directory, 1840 City Directories Allen County Public Library
Portsmouth, OH Business Directory, 1844 City Directories Allen County Public Library
Portsmouth, Ohio, City Directory, 1908 (in U.S. City Directories collection) Ancestry
Portsmouth, Ohio, City Directory, 1910 (in U.S. City Directories collection) Ancestry
Portsmouth, Ohio, City Directory, 1912 (in U.S. City Directories collection) Ancestry
Portsmouth, Ohio, City Directory, 1914 (in U.S. City Directories collection) Ancestry
Portsmouth, Ohio, City Directory, 1916 (in U.S. City Directories collection) Ancestry
Portsmouth, Ohio, City Directory, 1918 (in U.S. City Directories collection) Ancestry
Portsmouth, Ohio, City Directory, 1920 (in U.S. City Directories collection) Ancestry
Portsmouth, Ohio, City Directory, 1922 (in U.S. City Directories collection) Ancestry
Portsmouth, Ohio, City Directory, 1924 (in U.S. City Directories collection) Ancestry
Portsmouth, Ohio, City Directory, 1926 (in U.S. City Directories collection) Ancestry
Portsmouth, Ohio, City Directory, 1928 (in U.S. City Directories collection) Ancestry
Portsmouth, Ohio, City Directory, 1929 (in U.S. City Directories collection) Ancestry
Portsmouth, Ohio, City Directory, 1930 (in U.S. City Directories collection) Ancestry
Portsmouth, Ohio, City Directory, 1932 (in U.S. City Directories collection) Ancestry
Portsmouth, Ohio, City Directory, 1935 (in U.S. City Directories collection) Ancestry
Portsmouth, Ohio, City Directory, 1937 (in U.S. City Directories collection) Ancestry
Portsmouth, Ohio, City Directory, 1939 (in U.S. City Directories collection) Ancestry
Portsmouth, Ohio, City Directory, 1941 (in U.S. City Directories collection) Ancestry
Portsmouth, Ohio, City Directory, 1944 (in U.S. City Directories collection) Ancestry
Portsmouth, Ohio, City Directory, 1947 (in U.S. City Directories collection) Ancestry
Portsmouth, Ohio, City Directory, 1949 (in U.S. City Directories collection) Ancestry
Portsmouth, Ohio, City Directory, 1952 (in U.S. City Directories collection) Ancestry
Portsmouth, Ohio, City Directory, 1954 (in U.S. City Directories collection) Ancestry
Portsmouth, Ohio, City Directory, 1956 (in U.S. City Directories collection) Ancestry
Portsmouth, Ohio, City Directory, 1957 (in U.S. City Directories collection) Ancestry
Portsmouth, Ohio, City Directory, 1959 (in U.S. City Directories collection) Ancestry
Portsmouth, Ohio, City Directory, 1960 (in U.S. City Directories collection) Ancestry
Pruden's combined business directory and gazetteer : embracing the following cities, Wheeling, Sistersville, Parkersburg, Huntington, Charleston, &c., &c., W. Va., East Liverpool, Steubenville, Bellaire, Marietta, Ironton, Portsmouth, Ohio, and Ashland and Catlettsburg, Ky., for the years 1899-1900 FamilySearch Library
Sheppard's Portsmouth Directory, 1873-74 (in U.S. City Directories collection) Ancestry
The Western Address Directory Containing the Cards of Merchants, Manufacturers, and Other Businessmen in . . . Zanesville, (O.) Portsmouth, (O.) Dayton, (O.) Cincinnati, (O.) 1837 Open Library
The western address directory : containing the cards of merchants, manufacturers, and other business men, in Pittsburgh, (Pa.) Wheeling, (Va.) Zanesville, (O.) Portsmouth, (O.) Dayton, (O.) Cincinnati, (O.) Madison, (Ind.) Louisville, (K.) St. Louis, (Mo.) , 1837 LDS Genealogy
The western address directory : containing the cards of merchants, manufacturers, and other business men, in Pittsburgh, (Pa.) Wheeling, (Va.) Zanesville, (O.) Portsmouth, (O.) Dayton, (O.) Cincinnati, (O.) Madison, (Ind.) Louisville, (K.) St. Louis, (Mo.) , 1837 Internet Archive
Wiggins and Weaver's Ohio River Directory for 1871-72 Google Books
Wiggins and Weaver's Ohio River directory for 1871-1872 : embracing a full alphabetical record of the names of the inhabitants, and business directories of Wheeling, Parkersburg, Marietta, Pomeroy, Gallipolis, Ironton, Portsmouth, Ripley, Bellaire, Bridgeport, Harmar, Middleport, Martins Ferry, Maysville, Owensboro, Paducah, Lawrenceburg, Aurora, Madison, Cairo, Chester, Cape Girardeau FamilySearch Library