"United States Census, 1880," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:MD28-1LK : 14 January 2022), Randi Gunderson in household of Jens Gunderson, Pleasant Valley Township, Fayette, Iowa, United States; citing enumeration district , sheet , NARA microfilm publication T9 (Washington, D.C.: National Archives and Records Administration, n.d.), FHL microfilm .
"Iowa State Census, 1885," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:HZ4B-4MM : 2 March 2021), Rachel Gunderson in household of James Gunderson, Pleasant Valley, Fayette, Iowa; citing p. 12, 1885, State Historical Society, Des Moines; FHL microfilm 1,021,466.