Tags: Convention.
The 19th World Science Fiction Convention (Worldcon) also known as Seacon was held September 2–4 1961 at the Hyatt House Hotel in Seattle Washington USA. The convention chair was Wally Weber.The guest of honor at the 19th Worldcon was Robert A. Heinlein who gave a speech titled The Future Revisited. He was previously the guest of honor at the 3rd Worldcon and would again be the guest of honor at the 34th Worldcon. The Toastmaster was Harlan Ellison.