"United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MZM1-B7T : 19 February 2021), Richard Holcomb in household of M Holcomb, Rapidan, Blue Earth, Minnesota, United States; citing enumeration district ED 9, sheet 346A, NARA microfilm publication T9 (Washington, D.C.: National Archives and Records Administration, n.d.), FHL microfilm 1,254,615.
"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M99T-TNP : accessed 24 April 2021), Richard ? Holcome, Shelby township Amboy village, Blue Earth, Minnesota, United States; citing enumeration district (ED) 1, sheet 9A, family 198, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,240,757.