| Business | Phone |
| Humphrey Oil Corp 3004 Fairmount St, Dallas 75201 | (214) 528-9620 |
| Drew H Beams 4925 Greenville Ave, Dallas 75206 | (214) 369-2251 |
| E & G Energy Inc 4925 Greenville Ave 910, Dallas 75206 | (214) 360-0360 |
| Carla Petroleum Inc 16990 Dallas Pkwy 126, Dallas 75248 | (972) 733-1934 |
| U S Federal Leases For Oil Inc 2828 Forest Ln, Dallas 75234 | (972) 243-6974 |
| Estate Of Pearl A Doering 4231 Lorraine Ave, Dallas 75205 | (214) 528-0849 |