"United States Census, 1880," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:M6FC-HDC : 14 January 2022), Verginia Gauss in household of Eugene Gauss, St. Charles, St. Charles, Missouri, United States; citing enumeration district ED 198, sheet , NARA microfilm publication T9 (Washington, D.C.: National Archives and Records Administration, n.d.), FHL microfilm .
"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M2T4-LNY : accessed 17 March 2023), Virginia Gauss in household of Eugene Gauss, Columbia, Boone, Missouri, United States; citing enumeration district (ED) ED 11, sheet 17A, family 320, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 770; FHL microfilm 1,374,783.