| Business | Phone |
| Business Machine Repair 9131 Bustleton Ave, Philadelphia 19115 | (215) 677-5879 |
| Center City Business Systems 105 S Juniper St, Philadelphia 19107 | (215) 732-0566 |
| Edward Blake Business Machines Philadelphia 19102 | (215) 545-1036 |
| Gordon Typewriter Svc 1104 Bingham St, Philadelphia 19115 | (215) 676-1172 |
| Kerrigan Office Machine Co 2451 S 20th St, Philadelphia 19145 | (215) 467-4685 |
| Typewriter Maintenance Co 2052 Sansom St, Philadelphia 19103 | (215) 563-2049 |