28th World Science Fiction Convention


The 28th World Science Fiction Convention, also known as Heicon '70, was held on 20–24 August 1970 at the Stadthalle Heidelberg in Heidelberg, West Germany.
Manfred Kage eventually became Heicon's convention chairman, the last of more than a dozen fans who briefly held the position during the convention's rocky organizational period.

Participants

Attendance was approximately 620.

Guests of honor

1970 Hugo Awards