"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MMN3-L26 : accessed 3 October 2020), William F Alvis, Dover District, Goochland, Virginia, United States; citing enumeration district (ED) 14, sheet 2A, family 20, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,241,710.
"United States Census, 1920," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MJJR-WHM : accessed 3 October 2020), William F Alvis, Dover, Goochland, Virginia, United States; citing ED 21, sheet 12A, line 21, family 217, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, 1992), roll 1891; FHL microfilm 1,821,891.