| Source: The Printing Trades Magazine, 1909-1915 (incomplete run) Location: St.L. / 05 / P936 | |
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| Corporate Name: | General Engraving Company |
| Address: | 325 Locust St. |
| Volume: | II |
| Issue: | 6 |
| Date of Publication: | June 1910 |
| Page: | 22, 26 |
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