"United States Census, 1930," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:XHHK-PY8 : accessed 24 July 2021), Clarence E Swenson in household of George B Swenson, Irwin, Westmoreland, Pennsylvania, United States; citing enumeration district (ED) ED 61, sheet 2B, line 70, family 48, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 2155; FHL microfilm 2,341,889.
"United States Census, 1940," database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:KQ7T-913 : 7 January 2021), Clarence Swenson, Irwin, Westmoreland, Pennsylvania, United States; citing enumeration district (ED) 65-77, sheet 13A, line 3, family 240, 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 3631.
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