| Source: The Earlier Years of the Drug and Allied Trades in the Mississippi Valley, by A.C. Meyer (published in 1948) Location: St.L / 338.4 / M575 | |
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| Last Name: | Claus |
| First Name: | Otto |
| Title: | Dr. |
| Address: | 9th and Montgomery |
| Page: | 122-123 |
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