| Source: Annual Report of the Board of Police Commissioners of the City of St. Louis, 1872-1945 (incomplete run) Location: St.L. / 352.2 / Sa2 | |
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| Last Name: | O'Neill |
| First Name: | Thomas |
| Remarks: | in list of the commissioned officers, in the order of their rank and seniority, dating from their last promotion |
| Report: | 14th Annual Report, Year Ending April 13, 1875 |
| Page: | 16 |
