Info édition : Two volume hardcover & dust jacket, slipcased set. The second volume features George Pérez's original 21 pages of pencils from the never published 1980s crossover, an article about the first attempt at the crossover by K.C. Carlson, the miniseries proposal and plot development, rough scripts, a Pérez portfolio of art done to commemorate the project, annotated notes from Kurt Busiek to the characters, and other assorted background information. No month indicia.