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Bertha's birth and death information are available in Janet Barthel Berning’s book My Ancestors and Extended Family: Barthel, Dehen, Schmitz, and Roloff. Minnetonka, MN: The Polly Cat Press, 1997, page 72.
1887 |
May 20, 1887
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1919 |
January 9, 1919
Age 31
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