| Title | Paper | Date | Type | ||
|---|---|---|---|---|---|
| 76 |
 |
Rocky Mountain Oil and Mining Journal | 1970-09-14 | issue | |
| 77 |
 |
Rocky Mountain Oil and Mining Journal | 1970-09-21 | issue | |
| 78 |
 |
Rocky Mountain Oil and Mining Journal | 1970-09-28 | issue | |
| 79 |
 |
Rocky Mountain Oil and Mining Journal | 1970-10-19 | issue | |
| 80 |
 |
Rocky Mountain Oil and Mining Journal | 1970-10-26 | issue | |
| 81 |
 |
Rocky Mountain Oil and Mining Journal | 1970-11-02 | issue | |
| 82 |
 |
Rocky Mountain Oil and Mining Journal | 1970-11-09 | issue | |
| 83 |
 |
Rocky Mountain Oil and Mining Journal | 1970-11-16 | issue | |
| 84 |
 |
Rocky Mountain Oil and Mining Journal | 1970-12-14 | issue | |
| 85 |
 |
Rocky Mountain Oil and Mining Journal | 1971-06-14 | issue |