| Title | Paper | Date | Type | ||
|---|---|---|---|---|---|
| 1 |
 |
Vernal Express | 1951-12-20 | unclassified | |
| 2 |
 |
Vernal Express | 1974-12-19 | unclassified | |
| 3 |
 |
Vernal Express | 1977-12-01 | unclassified | |
| 4 |
 |
Vernal Express | 1977-12-08 | unclassified | |
| 5 |
 |
Vernal Express | 1977-12-15 | unclassified | |
| 6 |
 |
Vernal Express | 1977-12-22 | unclassified | |
| 7 |
 |
Vernal Express | 1977-12-22 | unclassified | |
| 8 |
 |
Vernal Express | 1977-12-29 | unclassified | |
| 9 |
 |
Vernal Express | 1979-12-06 | unclassified | |
| 10 |
 |
Vernal Express | 1979-12-13 | unclassified | |
| 11 |
 |
Vernal Express | 1979-12-20 | unclassified | |
| 12 |
 |
Vernal Express | 1979-12-27 | unclassified | |
| 13 |
 |
Vernal Express | 1980-12-04 | unclassified | |
| 14 |
 |
Vernal Express | 1980-12-11 | unclassified | |
| 15 |
 |
Vernal Express | 1980-12-18 | unclassified | |
| 16 |
 |
Vernal Express | 1980-12-18 | unclassified | |
| 17 |
 |
Vernal Express | 1980-12-25 | unclassified | |
| 18 |
 |
Vernal Express | 1981-12-03 | unclassified | |
| 19 |
 |
Vernal Express | 1981-12-03 | unclassified | |
| 20 |
 |
Vernal Express | 1981-12-10 | unclassified | |
| 21 |
 |
Vernal Express | 1981-12-10 | unclassified | |
| 22 |
 |
Vernal Express | 1981-12-10 | unclassified | |
| 23 |
 |
Vernal Express | 1981-12-17 | unclassified | |
| 24 |
 |
Vernal Express | 1981-12-17 | unclassified | |
| 25 |
 |
Vernal Express | 1981-12-17 | unclassified |