List of Worldcons List of Worldcons List of Worldcons

| blank | Year_ | Name_ | City | Country | Guests_of_Honor | Size_ |
|---|---|---|---|---|---|---|
| 16th | 1958 | Solacon | South Gate, California | United States | Richard Matheson | 211 |
| 17th | 1959 | Detention | Detroit, Michigan | United States | Poul Anderson (pro) , John Berry (fan) | 371 |
| 18th | 1960 | Pittcon | Pittsburgh, Pennsylvania | United States | James Blish | 568 |
| 19th | 1961 | Seacon | Seattle, Washington | United States | Robert A. Heinlein | 300 |
| 20th | 1962 | Chicon III | Chicago, Illinois | United States | Theodore Sturgeon | 730 |
| 21st | 1963 | Discon I | Washington, D.C. | United States | Murray Leinster | 600 |
| 22nd | 1964 | Pacificon II | Oakland, California | United States | Leigh Brackett (pro) , Edmond Hamilton (pro) , Forrest J Ackerman (fan) | 523 |
| 23rd | 1965 | Loncon II | London | UK | Brian W. Aldiss | 350 |