| Source: United Railways Bulletin, 1915-1923 (published monthly for distribution among the employees of the United Railways Company of St. Louis) (incomplete run) Location: St.L. / 05 / Un35 | |
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| Last Name: | Hammack |
| First Name: | Clay |
| Volume: | 3 |
| Issue: | 10 |
| Date: | October 15, 1917 |
| Page: | 11 |
