| Notes |
- "Illinois, Cook County Marriages, 1871-1920," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:Q212-TW8C : 28 November 2018), Erich Krumm and Paula Rosentreter, 21 Sep 1935; citing Marriage, Cook, Illinois, United States, citing Cook County Clerk. Cook County Courthouse, Chicago; FHL microfilm 102483025.
- "Illinois, Cook County, Birth Certificates, 1871-1940," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:QL99-X39Z : 27 March 2017), Paula Rosentreter in entry for Roland Karl Krumm, 24 Nov 1938; Chicago, Cook, Illinois, United States, reference/certificate 46189, Cook County Clerk, Cook County Courthouse, Chicago; FHL microfilm .
- "Illinois, Cook County, Birth Certificates, 1871-1940," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:QL9S-C6T2 : 27 March 2017), Paula W Rosentrater in entry for Ingrid Krumm, 16 Nov 1936; Chicago, Cook, Illinois, United States, reference/certificate 41854, Cook County Clerk, Cook County Courthouse, Chicago; FHL microfilm .
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