 
| Type | Valeur | 
|---|---|
| Titre | Harvey W Cushing, "United States Census, 1920" | 
| Personnes | 
|---|
|  Harvey Williams Cushing HC01 MS01 CS01 | 
| "United States Census, 1920", database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:MX1G-2ND : 1 February 2021), Harvey W Cushing, 1920. |