| Title | 1920 US Census - Household of Otto Kopp | |
| Date | 8-9 January 1920 | |
| Date Viewed | 25 January 2015 | |
| Media | Ancestry.com digital image | |
| Page | sheet 5A, lines 17-20 | |
| Locality | SD 1, ED 1723, 28th Ward, Chicago, Cook County, Illinois, USA | |
| Media Type | Census | |
| Source ID | S3164 | |
| Linked to Individuals: 4 |
Geraldine Leonore Della Kopp Otto Matthew Kopp Lydia E. Wilke Mildred Leanor Wilke | |