| Source: Ad-Mission (newsletter of the Women’s Advertising Club of St. Louis), 1938-1958 (incomplete run) Location: St.L. / 05 / Ad65 | |
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| Corporate Name: | National Matrix Co. |
| Address: | 410 North 15th St. |
| Advertisement: | yes |
| Volume: | 26 |
| Issue: | 17 |
| Date of Publication: | February 14, 1949 |
| Page: | 8 |
