| Service Machine |  Boston Pay Station Wall Type Model 27 | 1912 | Gray Telephone Pay Station Co. Hartford, CN, USA |
| Service Machine | Multi-Coin Portable Station Model 14 | 1912 | Gray Telephone Pay Station Co. Hartford, CN, USA |
| Service Machine | Multi-Coin Portable Station Model 24 | 1912 | Gray Telephone Pay Station Co. Hartford, CN, USA |
| Service Machine | Multi-Coin Post-Payment Station Model 23-A | 1912 | Gray Telephone Pay Station Co. Hartford, CN, USA |
| Service Machine | Multi-Coin Post-Payment Station Model 23-B | 1912 | Gray Telephone Pay Station Co. Hartford, CN, USA |
| Service Machine | Multi-Coin Post-Payment Station Model 23-C | 1912 | Gray Telephone Pay Station Co. Hartford, CN, USA |
| Service Machine | Multi-Coin Post-Payment Station Model 23-D | 1912 | Gray Telephone Pay Station Co. Hartford, CN, USA |
| Service Machine | Multi-Coin Post-Payment Station Model 23 | 1912 | Gray Telephone Pay Station Co. Hartford, CN, USA |
| Service Machine | Multi-Coin Prepay Station Model 50-A | 1912 | Gray Telephone Pay Station Co. Hartford, CN, USA |
| Service Machine | Multi-Coin Universal Type Pay Station Model 102 | 1912 | Gray Telephone Pay Station Co. Hartford, CN, USA |
| Service Machine | New One-Slot Pay Station Model 8-A | 1912 | Gray Telephone Pay Station Co. Hartford, CN, USA |
| Service Machine | Pay Station for Side Mouting Model 11-A | 1912 | Gray Telephone Pay Station Co. Hartford, CN, USA |
| Service Machine | Pay Station for Side Mouting Model 11 | 1912 | Gray Telephone Pay Station Co. Hartford, CN, USA |
| Service Machine | Pay Station Shelf Type Model 20 | 1912 | Gray Telephone Pay Station Co. Hartford, CN, USA |
| Service Machine | Pay Station Wall Type Model 7-A | 1912 | Gray Telephone Pay Station Co. Hartford, CN, USA |
| Service Machine | Pay Station Wall Type Model 7 | 1912 | Gray Telephone Pay Station Co. Hartford, CN, USA |
| Service Machine | Pay Station with Front Transmitter Mount Model 18-A | 1912 | Gray Telephone Pay Station Co. Hartford, CN, USA |
| Service Machine | Pay Station with Front Transmitter Mount Model 18 | 1912 | Gray Telephone Pay Station Co. Hartford, CN, USA |
| Service Machine | Pay Station Model 100 | 1912 | Gray Telephone Pay Station Co. Hartford, CN, USA |
| Service Machine | Pay Station Model 101 | 1912 | Gray Telephone Pay Station Co. Hartford, CN, USA |
| Service Machine | Single-Coin Portable Station Model 13-A | 1912 | Gray Telephone Pay Station Co. Hartford, CN, USA |
| Service Machine | Single-Coin Portable Station Model 28-A | 1912 | Gray Telephone Pay Station Co. Hartford, CN, USA |
| Service Machine | St. Louis One-Slot Pay Station Model 28 | 1912 | Gray Telephone Pay Station Co. Hartford, CN, USA |
| Service Machine | Street Corner Pay Station Model 15 | 1912 | Gray Telephone Pay Station Co. Hartford, CN, USA |
| Service Machine | Street Corner Pay Station Model 16 | 1912 | Gray Telephone Pay Station Co. Hartford, CN, USA |
| Service Machine | The Shield Type Pay Station Model 10-A | 1912 | Gray Telephone Pay Station Co. Hartford, CN, USA |
| Service Machine | The Shield Type Pay Station Model 10 | 1912 | Gray Telephone Pay Station Co. Hartford, CN, USA |
| Service Machine | Western One-Slot Pay Station Model 22 | 1912 | Gray Telephone Pay Station Co. Hartford, CN, USA |
