| 1959 | 1958 | 1957 | 1956 | 1955 | 1953 |
| Novel |
| They'd Rather Be Right / The Forever Machine [La máquina de la eternidad] , Mark Clifton & Frank Riley. |
| Novelette |
| Short Story |
| Professional Magazine |
| Astounding Science Fiction , John W. Campbell, Jr., ed.. |
| Professional Artist |
| Fanzine |
| Fantasy Times , James V. Taurasi, Sr. & Ray Van Houten, eds.. |
| Special Award |
| Sam Moskowitz. [as "Mystery Guest" and for his work on past conventions] |
