| Washington, District of Columbia: National Archives and Records Administration (NARA) | |
| 11 Apr 1940 | |
| Microfilm | |
| 5th Ward, Fond du Lac City, Fond du Lac County, Wisconsin | |
| Census | |
| Sixteenth Census of the United States, 1940 | |
| publication T627, roll 4479, E.D. 20-17, sheet 5A | |
| US-1940-1z | |
| Image (JPG): William Robert Herndon | |
| S1087 | |
| [US-1940-1z] "5th Ward, Fond du Lac City, Fond du Lac County, Wisconsin," Sixteenth Census of the United States, 1940, Washington, District of Columbia: National Archives and Records Administration (NARA), publication T627, roll 4479, E.D. 20-17, sheet 5A. | |
| Louisa Augusta Koepsel Nicholas Rauls |