| Source: Business letterheads Location: Archives | |
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| Business Name: | Provident Chemical Works |
| Building Illus: | Yes |
| Address: | 8011 Idaho Ave. |
| Date: | 1921 Feb 21 |
| Collection: | A1771 |
| Box: | 6 |
| Folder: | 1 |
| Items: | 1 |
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