| Paper | Date | Page | Article Title | Type | ||
|---|---|---|---|---|---|---|
| 1 |
 |
Rocky Mountain Oil and Mining Journal | 1969-12-01 | issue | ||
| 2 |
 |
Rocky Mountain Oil and Mining Journal | 1969-12-08 | issue | ||
| 3 |
 |
Rocky Mountain Oil and Mining Journal | 1969-12-15 | issue | ||
| 4 |
 |
Rocky Mountain Oil and Mining Journal | 1969-12-29 | issue | ||
| 5 |
 |
Rocky Mountain Oil and Mining Journal | 1970-12-14 | issue |