| Source: Mercantile and Manufacturing Scrapbooks, circa 1948-1977 Location: Reading Room / St.L. / 658 / M533 | |
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| Last Name: | Koelling |
| First Name: | Ruby |
| Title: | Mrs. |
| Volume: | 3 |
| Page: | 112 |
| Remarks: | in article "Machinery Products Corp. Growing: Mexican Business Helps St. Louis Firm," 1963 |
