↑ "United States Census, 1850," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:MXQ9-P6T : 21 December 2020), Elizabeth Burthe in household of Alfred Heuking, Gallipolis, Gallia, Ohio, United States; citing family , NARA microfilm publication (Washington, D.C.: National Archives and Records Administration, n.d.).
↑ Year: 1860; Census Place: Gallipolis, Gallia, Ohio; Roll: M653_966; Page: 518; Family History Library Film: 803966 Ancestry Record 7667 #43358029
↑ "United States Census, 1880," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:MZ91-QXQ : 14 January 2022), Elizabeth A. Bertha in household of Elizabeth Bertha, Winona, Winona, Minnesota, United States; citing enumeration district ED 289, 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:HH1G-Y6Z : 2 March 2021), Libbie Berthe in household of W L Keech, Mason City, Mason, Cerro Gordo, Iowa; citing p. 6, 1885, State Historical Society, Des Moines; FHL microfilm 1,021,451.
↑ "United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M9GM-MBX : accessed 3 February 2022), Elizebeth Berthe in household of William Keech, Calmar Township Calmar & Spillville towns, Winneshiek, Iowa, United States; citing enumeration district (ED) 126, sheet 3A, family 48, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,240,466.
↑ "United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MG96-J98 : accessed 3 February 2022), Elizabeth A Berthe in household of William L Keech, Lincoln, Sioux, Iowa, United States; citing enumeration district (ED) ED 151, sheet 16A, family 127, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 423; FHL microfilm 1,374,436.
↑ Obituary, The Sioux County Index (Hull, Iowa), 4 Sep 1914, page 1
↑ Death, Winona Republican Herald, 28 Aug 1914, page 16
↑ "California Death Index, 1905-1939," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:QK91-4JXQ : 23 February 2021), Elizabet A Berthe, 1914; citing 23894, Department of Health Services, Vital Statistics Department, Sacramento; FHL microfilm 1,686,044.