Key Comics - Harley Quinn

Set Description
My Harley's Key Comics Set is likely an ongoing effort to build a set that contains all of HQ's legitimate key comic book appearances. What determines a key comic is largely subjective. In regards to Harley, the inclusion of Batman Adventures #12, 28, Annual 1, Mad Love, Batman: Harley Quinn, and Harley Quinn #1 (2000 series) is not debatable, inevitably some will disagree with me over the exclusion and/or inclusion of others. When that happens, I hope you'll share your thoughts with me and if your argument is persuasive enough to change my mind, I promise that changes to this set aren't far behind. Also, I am fair from perfect, so an omission could very well be a mistake, or even ignorance, and not a deliberate exclusion. If a consensus, key, HQ comic is not included in this set, that is most likely what happened. Just let me know and I'll add it posthaste.

Set Goals
Ultimately my goals pertaining to this set is to acquire a complete, 9.8 collection of every significant comic book appeance of Harley Quinn, arguably the most popular comic book character created in the Modern Age (sorry, Deadpool. You came in 2nd place though. That's... umm... kinda cool though... I guess).