| Source: Overseas with an Aero Squadron / by Clarence F. Piesbergen (Belleville, Ill.: News-Democrat print, no date) (published circa 1920) Location: MO / 9.9 / P61 | |
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| Last Name: | Pfeil |
| First Name: | William |
| Hometown: | Belleville, Illinois |
| Page: | 37, 70 |
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