| Source: Valley Trust Magazine, 1926-1930 (St. Louis, Mo.: Mississippi Valley Trust Company) Location: St.L. / 05 / V243 | |
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| Last Name: | Graaf |
| First Name: | Frederick |
| Middle Name: | D. |
| Volume: | 4 |
| Issue: | 5 |
| Date of Publication: | November 1927 |
| Remarks: | mentioned |
| Page: | 13 |
