| Source: Mercantile and Manufacturing Scrapbooks, circa 1948-1977 Location: Reading Room / St.L. / 658 / M533 | |
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| Corporate Name: | Hy-C Co. |
| Address: | 2107 North 14th St. |
| Volume: | 4 |
| Page: | 192 |
| Remarks: | "Door-to-Door Sales by St. Louis Man Led to National Operation in Chimney Covers," 1972 |
