| Bronnen |
- [S651] Census - United States 1920, (https://www.familysearch.org/search/collection/1488411: National Archives and Records Administration, n.d.), T625, Kalamazoo, enumeration district (ED) 184, sheet 1A, dwelling 6, family 6, https://www.familysearch.org/ark:/61903/1:1:MZ3P-R9Q (Betrouwbaarheid: 3).
- [S260] Cemetery: Find A Grave, (Find A Grave), Clara Zuidema, 74697560., www.findagrave.com. (Betrouwbaarheid: 3).
- [S628] Secretary of State, Department of Vital Records, Lansing, Marriage Records USA - Michigan Marriages 1868-1925, ((https://www.familysearch.org/search/collection/1452395)), https://www.familysearch.org/ark:/61903/1:1:N3R3-JCQ. (Betrouwbaarheid: 3).
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