| Source: The Printing Trades Magazine, 1909-1915 (incomplete run) Location: St.L. / 05 / P936 | |
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| Corporate Name: | G. Eckhart Jewelry Co. |
| Address: | 8th and Locust Sts. |
| Advertisement: | yes |
| Volume: | II |
| Issue: | 12 |
| Date of Publication: | December 1910 |
| Page: | 26 |
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