| Business | Phone |
| S & J Operating Co 811 6th St 300, Wichita Falls 76301 | (940) 723-2166 |
| Raymond W Thor & Assoc Inc 1906 Austin St, Wichita Falls 76301 | (940) 766-0105 |
| Matthews Engineering 4312 Call Field Rd, Wichita Falls 76308 | (940) 692-3929 |
| Gladden & Assoc 471 Piegan Trl, Wichita Falls 76310 | (940) 761-3330 |