Mary Ann Shilts takes one of the give away comic books from the display rack at the New Dimensions Comics store in Cranberry, Pa., Butler County, as part of Free Comic Book Day 2012. Free Comic Book Day 2013 is Saturday, May 4. Keith Srakocic/AP hide caption

itoggle caption Keith Srakocic/AP

The Heart of Thomas, by Moto Hagio, was one of the first Japanese comics to deal with same-sex relationships. Fantagraphics hide caption

itoggle caption Fantagraphics

A new version of Superman, penned by Orson Scott Card, has caused a stir in the comics world. AP Photo/DC Comics hide caption

itoggle caption AP Photo/DC Comics