Batman (Volume 1 1940) Issues 251-300
Key Issues include;
#251 - Classic Neal Adams cover
#255 - 1st appearance of Anthony Lupus (werewolf)
#258 - 1st mention of Arkham Hospital
#286 - Cover art featuring the Joker by Jim Aparo
#291 - Classic Jim Aparo cover art featuring Batman's Rogue's Gallery
#294 - Cover art featuring the Joker
#300 - 300th Anniversary issue