| Business | Phone |
| Don A Karchmer Inc 21 E Main St, Oklahoma City 73104 | (405) 236-2210 |
| Market Data Center 2224 Nw 50th St, Oklahoma City 73112 | (405) 602-5963 |
| Mc Donald Realty Oklahoma City 73120 | (405) 749-9771 |
| New Century Svc 7401 Nw 107th St, Oklahoma City 73162 | (405) 720-1151 |