| Source: The St. Louis Builder/The Builder/The Realty Record and Builder, 1899-1911 (incomplete run) Location: Oversize / St.L. / 05 / R22 | |
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| Corporate Name: | Western Slate Company |
| Address: | 2711 Laclede Ave.; 1107, 1109 and 1111 Walnut St. |
| Volume: | VII |
| Issue: | 12 |
| Date of Publication: | February 1901 |
| Page: | 19 |
