| 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: | Helmbacker |
| First Name: | Joseph |
| Middle Name: | V. |
| Title: | Jr. |
| Illustration: | No |
| Address: | 400 Victor St. |
| Rank: | Private |
| Birth Year: | 1900 |
