| Notes |
- "United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MK61-4QR : accessed 2 August 2020), Charles, Oregon Ward 1, Ogle, Illinois, United States; citing enumeration district (ED) ED 83, sheet 1A, family 5, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 314; FHL microfilm 1,374,327.
- "United States Census, 1920," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MJSZ-7WV : accessed 2 August 2020), Charles T Rosentreter, Sandwich Ward 2, Dekalb, Illinois, United States; citing ED 37, sheet 9A, line 24, family 243, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, 1992), roll 303; FHL microfilm 1,820,303.
- "United States Census, 1920," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MJSZ-7WK : accessed 19 August 2020), Elizabeth Rosentreter in household of Charles T Rosentreter, Sandwich Ward 2, Dekalb, Illinois, United States; citing ED 37, sheet 9A, line 25, family 243, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, 1992), roll 303; FHL microfilm 1,820,303.
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