 
| Type | Valeur | 
|---|---|
| Titre | Percy C Cushing in household of Christopher Cushing, "United States Census, 1900" | 
| Personnes | 
|---|
|  Percival C Cushing | 
| "United States Census, 1900", database with images, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:MSLS-JZ7 : 13 January 2022), Percy C Cushing in entry for Christopher Cushing, 1900. |