| Paper | Date | Page | Article Title | Type | ||
|---|---|---|---|---|---|---|
| 76 |
 |
Rocky Mountain Oil and Mining Journal | 1969-06-30 | issue | ||
| 77 |
 |
Rocky Mountain Oil and Mining Journal | 1969-07-07 | issue | ||
| 78 |
 |
Rocky Mountain Oil and Mining Journal | 1969-06-02 | issue | ||
| 79 |
 |
Rocky Mountain Oil and Mining Journal | 1969-06-16 | issue | ||
| 80 |
 |
Rocky Mountain Oil and Mining Journal | 1969-05-05 | issue | ||
| 81 |
 |
Rocky Mountain Oil and Mining Journal | 1969-03-08 | issue | ||
| 82 |
 |
Rocky Mountain Oil and Mining Journal | 1969-08-18 | issue | ||
| 83 |
 |
Rocky Mountain Oil and Mining Journal | 1969-06-23 | issue | ||
| 84 |
 |
Rocky Mountain Oil and Mining Journal | 1969-07-28 | issue | ||
| 85 |
 |
Rocky Mountain Oil and Mining Journal | 1969-08-25 | issue |