| Title | Paper | Date | Type | ||
|---|---|---|---|---|---|
| 1 |
 |
Vernal Express | 1953-04-09 | unclassified | |
| 2 |
 |
Vernal Express | 1953-04-23 | unclassified | |
| 3 |
 |
Vernal Express | 1979-04-19 | unclassified | |
| 4 |
 |
Vernal Express | 1980-04-03 | unclassified | |
| 5 |
 |
Vernal Express | 1980-04-03 | unclassified | |
| 6 |
 |
Vernal Express | 1980-04-10 | unclassified | |
| 7 |
 |
Vernal Express | 1980-04-10 | unclassified | |
| 8 |
 |
Vernal Express | 1980-04-17 | unclassified | |
| 9 |
 |
Vernal Express | 1980-04-24 | unclassified | |
| 10 |
 |
Vernal Express | 1981-04-09 | unclassified | |
| 11 |
 |
Vernal Express | 1981-04-30 | unclassified | |
| 12 |
 |
Vernal Express | 1982-04-01 | unclassified | |
| 13 |
 |
Vernal Express | 1982-04-01 | unclassified | |
| 14 |
 |
Vernal Express | 1982-04-08 | unclassified | |
| 15 |
 |
Vernal Express | 1982-04-08 | unclassified | |
| 16 |
 |
Vernal Express | 1982-04-08 | unclassified | |
| 17 |
 |
Vernal Express | 1982-04-15 | unclassified | |
| 18 |
 |
Vernal Express | 1982-04-15 | unclassified | |
| 19 |
 |
Vernal Express | 1982-04-15 | unclassified | |
| 20 |
 |
Vernal Express | 1982-04-22 | unclassified | |
| 21 |
 |
Vernal Express | 1982-04-22 | unclassified | |
| 22 |
 |
Vernal Express | 1982-04-28 | unclassified | |
| 23 |
 |
Vernal Express | 1982-04-28 | unclassified | |
| 24 |
 |
Vernal Express | 1982-04-28 | unclassified | |
| 25 |
 |
Vernal Express | 1983-04-06 | unclassified |