| Paper | Date | Page | Article Title | Type | ||
|---|---|---|---|---|---|---|
| 1 |
 |
Rocky Mountain Oil and Mining Journal | 1969-10-06 | issue | ||
| 2 |
 |
Rocky Mountain Oil and Mining Journal | 1969-10-20 | issue | ||
| 3 |
 |
Rocky Mountain Oil and Mining Journal | 1970-10-26 | issue | ||
| 4 |
 |
Rocky Mountain Oil and Mining Journal | 1969-10-13 | issue | ||
| 5 |
 |
Rocky Mountain Oil and Mining Journal | 1970-10-19 | issue |