Amboy Map Records
Sanborn Fire Insurance Map from Amboy, Blue Earth County, Minnesota, December 1914 Library of Congress 
Sanborn Fire Insurance Map from Amboy, Blue Earth County, Minnesota, March 1899 Library of Congress
Sanborn Fire Insurance Map from Amboy, Blue Earth County, Minnesota, March 1905 Library of Congress
Lake Crystal Map Records
Sanborn Fire Insurance Map from Lake Crystal, Blue Earth County, Minnesota, January 1908 Library of Congress
Sanborn Fire Insurance Map from Lake Crystal, Blue Earth County, Minnesota, June 1894 Library of Congress
Sanborn Fire Insurance Map from Lake Crystal, Blue Eath County, Minnesota, April 1914 Library of Congress
Sanborn Fire Insurance Map from Lake Crystal, Blue Eath County, Minnesota, January 1900 Library of Congress
Mankato Map Records
Bird's eye view map of the city of Mankato, Blue Earth County, Minnesota 1870. Library of Congress
Mankato, 1870 Bird's Eye View Map (in U.S. Historic Land Ownership and Reference Atlases) Ancestry
Mankato, Minnesota 1993 Map American Geographical Society
Sanborn Fire Insurance Map from Mankato, Blue Earth and Nicollet Counties, Minnesota, December 1914 Library of Congress
Sanborn Fire Insurance Map from Mankato, Blue Earth and Nicollet Counties, Minnesota, July 1900 Library of Congress
Sanborn Fire Insurance Map from Mankato, Blue Earth and Nicollet Counties, Minnesota, March 1908 Library of Congress
Sanborn Fire Insurance Map from Mankato, Blue Earth and Nicollet Counties, Minnesota, May 1889 Library of Congress
Sanborn Fire Insurance Map from Mankato, Blue Earth and Nicollet Counties, Minnesota, May 1894 Library of Congress
Sanborn Fire Insurance Map from Mankato, Blue Earth and Nicollet Counties, Minnesota, October 1884 Library of Congress
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