| Title | 1940 U.S. census, FamilySearch, Digital images | |
| Short Title | 1940 U.S. Census Population Schedule, South Dakota, McCook County | |
| Author | South Dakota, McCook County | |
| Publisher | https://www.familysearch.org/search/collection/2000219: National Archives and Records Administration, 2012 | |
| Repository | FamilySearch | |
| _ITALIC | Y | |
| _PAREN | Y | |
| Source ID | S405 | |
| Linked to (2) | Frederick G. Edzards Gertrude L. Weeldreyer | |