List of Worldcons List of Worldcons List of Worldcons

| blank | Year_ | Name_ | City | Country | Guests_of_Honor | Size_ |
|---|---|---|---|---|---|---|
| 1st | 1939 | Nycon I | New York, New York | United States | Frank R. Paul | 200 |
| 2nd | 1940 | Chicon I | Chicago, Illinois | United States | E. E. Doc Smith | 128 |
| 3rd | 1941 | Denvention I | Denver, Colorado | United States | Robert A. Heinlein | 90 |
| 4th | 1946 | Pacificon I | Los Angeles, California | United States | A. E. van Vogt , E. Mayne Hull | 130 |
| 5th | 1947 | Philcon I | Philadelphia, Pennsylvania | United States | John W. Campbell, Jr. | 200 |
| 6th | 1948 | Torcon I | Toronto, Ontario | Canada | Robert Bloch (Pro) , Bob Tucker (fan) | 200 |