*"United States Census, 1880," database with images, FamilySearch (
https://familysearch.org/ark:/61903/1:1:M6PK-T9T : 19 August 2017), Lulu Frank in household of Gertrude Frank, Igo, Shasta, California, United States; citing enumeration district ED 94, sheet 110A, NARA microfilm publication T9 (Washington, D.C.: National Archives and Records Administration, n.d.), FHL microfilm 1,254,082.
*"United States Census, 1900," database with images, FamilySearch (
https://familysearch.org/ark:/61903/1:1:M9GL-DGM : accessed 22 May 2020), Lulu Arbuckle in household of Etna M Arbuckle, Callahan Township, Siskiyou, California, United States; citing enumeration district (ED) 134, sheet 1A, family 12, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,240,113.
*"United States Census, 1920," database with images, FamilySearch (
https://familysearch.org/ark:/61903/1:1:MH3Q-FGQ : accessed 22 May 2020), Lula A Day in household of Thomas Evan Day, Oakland, Alameda, California, United States; citing ED 76, sheet 5B, line 63, family 133, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, 1992), roll 89; FHL microfilm 1,820,089.
*"United States Census, 1930," database with images, FamilySearch (
https://familysearch.org/ark:/61903/1:1:XCXX-CXZ : accessed 22 May 2020), Lulu A Day in household of Thomas E Day, Oakland, Alameda, California, United States; citing enumeration district (ED) ED 206, sheet 7B, line 100, family 154, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 108; FHL microfilm 2,339,843.
*"United States Census, 1940," database with images, FamilySearch (
https://familysearch.org/ark:/61903/1:1:K9DZ-46G : 23 November 2019), Lola Day in household of Evan Day, Douglas Judicial Township, San Joaquin, California, United States; citing enumeration district (ED) 39-12, sheet 14A, line 36, family 283, Sixteenth Census of the United States, 1940, NARA digital publication T627. Records of the Bureau of the Census, 1790 - 2007, RG 29. Washington, D.C.: National Archives and Records Administration, 2012, roll 323.