Dear Bat-Group,

As editors of Grant Morrison's Batman books I don't have to tell you guys how much I love his continuity references. I'm super excited for Scott Snyder's "Gates of Gotham" miniseries because of the potential it has to capitalize on the goldmine that is the Golden & Silver age comics. My question to you all is how deep are Scott and Kyle digging? I'd love for them to go far back as possible but I don't want them tripping over what Grant has created recently either. Please tell me you guys are keeping track so I don't lose any hair, I'm far too young for that.