| Notes |
- "Illinois, Cook County, Birth Certificates, 1871-1940," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:Q23M-F7YC : 18 May 2016), William Carl Rosentreter, 05 Aug 1891; Chicago, Cook, Illinois, United States, reference/certificate 130933, Cook County Clerk, Cook County Courthouse, Chicago; FHL microfilm .
- "Illinois, Cook County Deaths, 1878-1994," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:Q2M4-BX5C : 17 March 2018), William C Rosentreter, 01 May 1950; citing Chicago, Cook, Illinois, United States, source reference , record number , Cook County Courthouse, Chicago; FHL microfilm .
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