| Source: Mercantile and Manufacturing Scrapbooks, circa 1948-1977 Location: Reading Room / St.L. / 658 / M533 | |
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| Last Name: | Mattson |
| First Name: | Leland |
| Middle Name: | N. |
| Volume: | 4 |
| Page: | 106 |
| Remarks: | in article titled "Drug Test Firm Violated Rules, U.S. Charges," 1969 |
