| Source: Missouri Athletic Club Journal: A Monthly Journal Devoted to Athletics in General (August 1903 and October 1903) Location: St.L. / 367 / M69j | |
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| Corporate Name: | R.G. Hopper & Co. |
| Address: | 24 South 14th St. |
| Advertisement: | yes |
| Volume: | I |
| Issue: | 1 |
| Publication Date: | August 1903 |
| Page: | 8 |
