| Title | Paper | Date | Type | ||
|---|---|---|---|---|---|
| 1 |
 |
Vernal Express | 1973-08-23 | unclassified | |
| 2 |
 |
Vernal Express | 1973-08-30 | unclassified | |
| 3 |
 |
Vernal Express | 1973-08-30 | unclassified | |
| 4 |
 |
Vernal Express | 1977-08-04 | unclassified | |
| 5 |
 |
Vernal Express | 1977-08-11 | unclassified | |
| 6 |
 |
Vernal Express | 1977-08-18 | unclassified | |
| 7 |
 |
Vernal Express | 1977-08-25 | unclassified | |
| 8 |
 |
Vernal Express | 1979-08-02 | unclassified | |
| 9 |
 |
Vernal Express | 1979-08-09 | unclassified | |
| 10 |
 |
Vernal Express | 1979-08-16 | unclassified | |
| 11 |
 |
Vernal Express | 1979-08-23 | unclassified | |
| 12 |
 |
Vernal Express | 1979-08-30 | unclassified | |
| 13 |
 |
Vernal Express | 1980-08-07 | unclassified | |
| 14 |
 |
Vernal Express | 1980-08-21 | unclassified | |
| 15 |
 |
Vernal Express | 1980-08-28 | unclassified | |
| 16 |
 |
Vernal Express | 1981-08-06 | unclassified | |
| 17 |
 |
Vernal Express | 1981-08-13 | unclassified | |
| 18 |
 |
Vernal Express | 1981-08-27 | unclassified | |
| 19 |
 |
Vernal Express | 1982-08-04 | unclassified | |
| 20 |
 |
Vernal Express | 1982-08-04 | unclassified | |
| 21 |
 |
Vernal Express | 1982-08-11 | unclassified | |
| 22 |
 |
Vernal Express | 1982-08-11 | unclassified | |
| 23 |
 |
Vernal Express | 1982-08-18 | unclassified | |
| 24 |
 |
Vernal Express | 1982-08-18 | unclassified | |
| 25 |
 |
Vernal Express | 1982-08-25 | unclassified |