| 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: | Knapp |
| First Name: | Ralph |
| Middle Name: | N. |
| Illustration: | No |
| Rank: | Corporal |
| Birth Year: | 1888 |
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