Batman: Legends of the Dark Knight covers
First Issue #1 - November 1989
Last #214 - January 2007
Batman: Legends of the Dark Knight comic books are great to collect because they attracted great writers and artists including Dennis O'Neil, Grant Morrison, Mike Mignola, Bill Willingham, Matt Wagern and Doug Moench. The idea was to create a graphic novel, but split it across 5 issues. So, you get one 100 page story if you buy issues #1-5, or #6-10, or #11-15 or #16-20. After that the size of the stories changed.
Here are the issues for each storyline: