| Title | Paper | Date | Type | ||
|---|---|---|---|---|---|
| 1 |
 |
Vernal Express | 1953-05-07 | unclassified | |
| 2 |
 |
Vernal Express | 1978-05-18 | unclassified | |
| 3 |
 |
Vernal Express | 1980-05-01 | unclassified | |
| 4 |
 |
Vernal Express | 1980-05-08 | unclassified | |
| 5 |
 |
Vernal Express | 1980-05-08 | unclassified | |
| 6 |
 |
Vernal Express | 1980-05-15 | unclassified | |
| 7 |
 |
Vernal Express | 1980-05-22 | unclassified | |
| 8 |
 |
Vernal Express | 1980-05-29 | unclassified | |
| 9 |
 |
Vernal Express | 1981-05-07 | unclassified | |
| 10 |
 |
Vernal Express | 1981-05-14 | unclassified | |
| 11 |
 |
Vernal Express | 1981-05-21 | unclassified | |
| 12 |
 |
Vernal Express | 1981-05-28 | unclassified | |
| 13 |
 |
Vernal Express | 1982-05-05 | unclassified | |
| 14 |
 |
Vernal Express | 1982-05-05 | unclassified | |
| 15 |
 |
Vernal Express | 1982-05-12 | unclassified | |
| 16 |
 |
Vernal Express | 1982-05-12 | unclassified | |
| 17 |
 |
Vernal Express | 1982-05-19 | unclassified | |
| 18 |
 |
Vernal Express | 1982-05-19 | unclassified | |
| 19 |
 |
Vernal Express | 1982-05-19 | unclassified | |
| 20 |
 |
Vernal Express | 1982-05-26 | unclassified | |
| 21 |
 |
Vernal Express | 1982-05-26 | unclassified | |
| 22 |
 |
Vernal Express | 1983-05-04 | unclassified | |
| 23 |
 |
Vernal Express | 1983-05-04 | unclassified | |
| 24 |
 |
Vernal Express | 1983-05-11 | unclassified | |
| 25 |
 |
Vernal Express | 1983-05-11 | unclassified |