| Source: The Printing Trades Magazine, 1909-1915 (incomplete run) Location: St.L. / 05 / P936 | |
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| Last Name: | Wirts |
| First Name: | Charles |
| Middle Name: | C. |
| Volume: | IV |
| Issue: | 3 |
| Date of Publication: | March, 1912 |
| Page: | 22 |
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