If you’re in downtown Cincinnati on Saturday, May 21, stop by the 4th annual Cincinnati Library Comic Con and check out the Midwest BSFA table! The theme is the 50th anniversary of Star Trek and we’ll be doing some trivia on the show’s black recurring characters and guest stars! The Library of Cincinnati and Hamilton County, noon to 5 p.m., 800 Vine Street, downtown (Cincinnati 45202), 513-369-6900