| Source: World War I: Biography and Service Records:
Persons Who Enlisted in St. Louis City and
County Location: Reading room / St. Louis shelves | |
 | |
| Last Name: | Cavallo |
| First Name: | William |
| Middle Name: | D. |
| Illustration: | Yes |
| Address: | 5210a Theodosia Ave. |
| Rank: | Sergeant |
| Birth Year: | 1895 |
