Volkszählung von Iowa 1915
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"Iowa, State Census, 1915." Database with images. FamilySearch. http://FamilySearch.org : 14 August 2025. Iowa State Historical Department, Des Moines.
"Iowa, State Census, 1915." Database with images. FamilySearch. http://FamilySearch.org : 14 August 2025. Iowa State Historical Department, Des Moines.