Tags: Convention.
The 15th World Science Fiction Convention also known as Loncon I was held 6–9 September 1957 at the King’s Court Hotel in London England. It was the first Worldcon held outside North America.The chairman was Ted Carnell. The guest of honor was John W. Campbell Jr. the editor of Astounding magazine. Total attendance was 268. Events included a fancy dress ball on the evening of Friday September 6th.