Sources |
- [S5010] http://www.findagrave.com, Headstone, Poppe, Clarence H. and Geneva, (https://www.findagrave.com/memorial/24145100/clarence-h_-poppe), none. (Reliability: 2).
- [S670] Ancestry.com, 1930 United States Federal Census, Clay City, Clay County, Illinois, (District 0003) (Village), image 09, page 5a, (https://www.ancestry.com/interactive/6224/4584337_00604?backurl=https%3a%2f%2fsearch.ancestry.com%2fsearch%2fdb.aspx%3fd), none. (Reliability: 2).
- [S1170] Ancestry.com, 1940 United States Federal Census, Clay City, Clay County, Illinois, (District 13-3) (Village), image 08, page 4a, (https://www.ancestry.com/interactive/2442/M-T0627-00769-00053?backurl=http%3a%2f%2fsearch.ancestry.com%2fsearch%2fdb.asp) (Reliability: 3).
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