This is probably the most interesting addition to my fifties Batman collection to date. At the height of Batmania in 1966, Signet Books began publishing pocket book collections of Batman comics. The first was a general Batman collection, the second was actually a novelization, the fourth was a collection of Penguin and Catwoman stories, and the third, pictured above, was obviously a Joker collection. As the size is reduced, each page usually has two panels, with the stories complete except for covers. This collection reprints five fifties and sixties Joker stories: "The Challenge of The Joker" from Batman #136, "The Joker's Winning Team!" from Batman #86, "Joker's Millions!" from Detective Comics #180, "The Joker's Journal!" from Detective Comics #193, and "Batman-Clown of Crime!" from Batman #85. Of these five, two have been reprinted elsewhere and the other three haven only been reprinted in this collection. As for the actual copy I picked up, the outside covers are a bit worn and dirty, but the reproductions inside are clear as a bell. Perfectly readable and, in the case of the blog, reviewable.