Made a great find at a used bookstore in Carson City, Nev., a few weeks ago, this copy of Astounding Science Fiction magazine from September 1957. It's pretty beat-up, with the back cover missing and the front cover torn and doodled on(!), but the cover story is Robert Heinlein's Citizen of the Galaxy, part one of a four-part serialization.
Also of note in this issue, a letter to editor John Campbell from Roberta Wild, secretary of the 15th World Science Fiction Convention, slated for Sept, 7-9, 1957 in London, with details about the event, including the fees: Membership fee $1; Entrance fee $1; Convention Luncheon $1.50; Hotel $2.85 for bed and breakfast, lunch $0.80, dinner $0.90.
Wow. Just wow. :)