- Altrav Petroleum Co
- Bengalia Land & Cattle Co
- BP America Inc
- Cimarex Energy Co
- Crest Resources
- Ellis-Johnson Engineering
- Elson Oil Co
- Gemini Oil Co
- Graythorn Oil Corp
- H L Wirick Jr
- Herbert Gussman Oil
- Kiska Oil Co
- Link Oil Co
- Manti Resources
- Marjo Operating Co Inc
- N M & O Operating Co
- Nadel & Gussman
- Okie Crude Co
- Panoak Oil & Gas Corp
- Petroleum Asset Management Co
- R G Berry Co
- Sam W Mays Jr
- Samson Investment Co
- Sylvan Oil Operating Co
- Toomey Oil Co
- Uplands Resources Inc
- W W Mc Clure Jr