Oct. 9: Batman stamps

The U.S. Postal Service is launching a series of Forever stamps (49 cents) in honor of Batman's 75th anniversary. Four versions of the iconic DC Comics superhero are depicted from four eras of the comic-book character's history (Can you name the artists?). In addition, there are four incarnations of the Bat-Signal. The stamps, which will premiere at New York Comic Con next week, go on sale Oct. 9.