| Source: The Printing Trades Magazine, 1909-1915 (incomplete run) Location: St.L. / 05 / P936 | |
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| Last Name: | Holtcamp |
| First Name: | Charles |
| Middle Name: | W. |
| Portrait: | Yes |
| Volume: | II |
| Issue: | 11 |
| Date of Publication: | November, 1910 |
| Page: | 62 |
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