| Paper | Date | Page | Article Title | Type | ||
|---|---|---|---|---|---|---|
| 1 |
 |
Rocky Mountain Oil and Mining Journal | 1970-02-02 | issue | ||
| 2 |
 |
Rocky Mountain Oil and Mining Journal | 1970-02-09 | issue | ||
| 3 |
 |
Rocky Mountain Oil and Mining Journal | 1970-02-16 | issue | ||
| 4 |
 |
Rocky Mountain Oil and Mining Journal | 1970-02-23 | issue |