| Source: The Engineers' Club of St. Louis Year Book, 1948 Location: St.L. / 620.6 / As78y | |
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| Last Name: | Postlethwaite |
| First Name: | Preston |
| Middle Name: | Barr |
| Photograph: | Yes |
| Address: | 4 Edgewood Road |
| Page: | 161 |
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