| Business | Phone |
| Hal C Smith & Assoc Inc 1225 W Main St # 106, Norman 73069 | (405) 321-2370 |
| Kobyco Energy Inc 2401 Tee Cir # 205, Norman 73069 | (405) 447-4242 |
| Warren Land Svc 3500 W Robinson St # 201, Norman 73072 | (405) 329-9232 |
| Texoma Land Consultants 770 W Rock Creek Rd # 117, Norman 73069 | (405) 321-6777 |
| Sam B Rose Oil & Gas Prprts 4316 Northridge Rd, Norman 73072 | (405) 364-6920 |