Washington Antiquarian Book Fair at the Sphinx Club You can splurge or just stare at this annual curated festival featuring rare books, manuscripts, maps and sought-after autographs. This year’s treats: a copy of “To Kill a Mockingbird” signed by Harper Lee and the cast of the 1962 film, and Allen Ginsberg’s signature on the title and dedication pages of a first edition of “Howl.” But there are items appealing to those on a smaller budget as well, with more than 60 exhibitors on hand, as well as the Typewriter Rodeo pounding out custom poems that Saturday. The Sphinx Club, 1315 K St. NW. wabf.com. $5-$15.