| Título Colección |
Número |
Variante |
Mes |
Año |
| Robocop, Vol. 1 | 15 | | MAY | 1991 |
| Robotech II The Sentinels Book Two | 7 | | MAY | 1991 |
| Thor, Vol. 1 | 432 | | MAY | 1991 |
| The Toxic Avenger | 2 | | MAY | 1991 |
| Transformers | 78 | | MAY | 1991 |
| Uncanny X-Men, Vol. 1 | 276 | | MAY | 1991 |
| Web of Spider-Man, Vol. 1 | 76 | | MAY | 1991 |
| The West Coast Avengers, Vol. 2 | 70 | | MAY | 1991 |
| What If, Vol. 2 | 25 | | MAY | 1991 |
| What The..? | 12 | | MAY | 1991 |
| Wolverine, Vol. 2 | 39 | | MAY | 1991 |
| X-Factor, Vol. 1 | 66 | 66 | MAY | 1991 |
| The Savage Sword of Conan, Vol. 1 | 185 | | MAY | 1991 |
| Sensational She-Hulk, Vol. 1 | 27 | | MAY | 1991 |
| Sergio Aragonés Groo the Wanderer, Vol. 2 | 77 | | MAY | 1991 |
| Silver Surfer, Vol. 3 | 49 | | MAY | 1991 |
| Spicy Adult Stories | 3 | | MAY | 1991 |
| Spider-Man, Vol. 1 | 10 | | MAY | 1991 |
| Black Panther: Panther's Prey | 1 | | MAY | 1991 |
| Doctor Who Magazine | 173 | | MAY | 1991 |