| Business | Phone |
| Harmony Electronic Svc 2150 Sylved Ln, Cincinnati 45238 | (513) 451-0515 |
| Ronald F Wehmeier Organ Svc 523 Elberon Ave, Cincinnati 45205 | (513) 471-2588 |
| Schaedle Pipe Organ Svc 978 Hilliard Dr, Cincinnati 45238 | (513) 922-7088 |
| Spahr Organ Svc 11449 Lebanon Rd, Cincinnati 45241 | (937) 443-0151 |
| Sphar Organ Svc 11449 Lebanon Rd, Cincinnati 45241 | (513) 769-4352 |