Science Fiction Chronicle's Andrew I. Porter has posted a ton of amazing photos of fan gatherings going back as far as the 1920s — many of them sent to Porter by super-fan Forrest J. Ackerman.

Here are a few of our favorites, including this amazing photo of the seventh Worldcon, in 1949, featuring Lois Miles, a model and science fiction fan hired to serve as "Miss Science Fiction" at the convention. Check out tons more photos at the link. [Flickr via SF Scope]