"United States Census, 1930," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:XHHB-TJ9 : accessed 30 December 2022), Martha O Culp in household of Lewis O Culp, Vandergrift, Westmoreland, Pennsylvania, United States; citing enumeration district (ED) ED 175, sheet 4B, line 97, family 101, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 2160; FHL microfilm 2,341,894.
"United States Census, 1940," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:KQWM-4PJ : 7 January 2021), Martha Culp in household of Louis Culp, Oklahoma, Westmoreland, Pennsylvania, United States; citing enumeration district (ED) 65-172, sheet 4A, line 33, family 68, 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 3636.
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