| Source: Parks Air News, 1933-1949 Location: IL / 629.13 / P252n (oversize box) | |
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| Last Name: | Hirst |
| First Name: | Charles |
| Middle Name: | J. |
| Volume: | 5 |
| Issue: | 4 |
| Date of Publication: | June 1937 |
| Page: | 1 |
| Remarks: | article by |
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