| Source: Airscoop (St. Louis, Mo.: McDonnell Aircraft Corporation), 1949-1969 Location: Oversize / St.L. / 05 / M146 | |
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| First Name: | Leo |
| Middle Name: | E. |
| Last Name: | Sieferd |
| Volume: | XXVIII |
| Issue: | 7 |
| Date of Publication: | July 1969 |
| Page: | 7 |
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