References
Census
1870 United States Federal Census, Wapello County, Iowa, population schedule, Blakesburg City in Adams Township, Ottumwa post office, folio 17 (front), page no. 3, dwelling 17, family 17, Franklin Fritz in the household of Benedict Fritz; digital image, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MDKM-XXP : 23 December 2012); citing FHL microfilm number 545921; citing NARA microfilm publication M593, roll 422.
1880 United States Federal Census, Wapello County, Iowa, population schedule, Blakesburg, folio 214-B, page no. 30, dwelling 198, family 199, Frank Fritz in the household of Benedict Fritz; digital image, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MDL2-BQ9 : 23 December 2012); citing FHL microfilm number 1254368; citing NARA microfilm publication T9, roll 368.
1895 Iowa State Census, Wapello County, Iowa, Blakesburg in Adams Township, page 43 (penned, front), page 44 (stamped, back), dwelling 252, family (incorrect value on census), Frank Fritz in the household of Moses H Abernathy; digital image, FamilySearch (https://familysearch.org/pal:/MM9.1.1/VTQ5-LVQ : 30 December 2012); citing FHL microfilm number 1022189, roll number not provided.