Just in time for the 75th anniversary, some photos of the "first" science fiction convention, in Leeds (shown here, Walter Gillings, Arthur C. Clarke, Ted Carnell, in front of Theosophical Hall). Although the site pooh-poohs the idea that the first Philcon was the first-ever con, I'm somewhat loyal to the notion, for the completely ahistorical and biased reason that I was Philcon's guest of honor this year, 75 years after its first gathering.
In January 1937, the Leeds chapter of the Science Fiction League brought something new into the world: the first ever SF convention. (A counter claim is made for an earlier visit of New York fans to meet Philadelphia fans at the home of one of their number, but this is hard to take seriously - see THE FIRST EVER CONVENTION, link below.) At a time when travelling any distance was much more difficult than it is today, several of those attending travelled hundreds of miles to be there. Held in Leeds' Theosophical Hall, at 14 Queen Square, the main order of business was setting up the Science Fiction Association, the UK's first national SF organisation.
THE FIRST CONVENTION (1937) (Thanks, Paul!)