| Source: Parks Air News, 1933-1949 Location: IL / 629.13 / P252n (oversize box) | |
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| Last Name: | Zumwalt |
| First Name: | Robert |
| Middle Name: | F. |
| Volume: | 14 |
| Issue: | 8 |
| Date of Publication: | September-October 1947 |
| Page: | 8 |
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