| Source: Business letterheads Location: Archives | |
 | |
| Last Name: | Merwin |
| First Name: | Samuel |
| Building Illus: | No |
| Type of Business: | proprietor of Harper's patent steam tube cleaners for the State of Illinois |
| Date: | 1878 Mar 2 |
| Illustration: | Harper's patent steam tube cleaner |
| Collection: | A0214 |
| Items: | 1 |
