| Source: The St. Louis Post Office (St. Louis, Mo.: St. Louis Post Office, 1937) Location: St.L. / 353.4 / Sa24 | |
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| Last Name: | Calkin |
| First Name: | Martin |
| Middle Name: | L. |
| Portrait: | yes |
| Remarks: | chief clerk, railway mail service |
| Page: | 40 |
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