| Source: Mercantile, Industrial and Professional Saint Louis / by E.D. Kargau (1902) Location: Reading Room / St.L. / 9.17 / K14 | |
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| Last Name: | Hayden |
| First Name: | Henry |
| Middle Name: | L. |
| Page: | 132-134 |
| Remarks: | listed as director of the St. Louis Real Estate Exchange |
