The series also featured the popular "Batman: Black and White" back-up strip, which allowed various artists with widely varying styles to do their take on the Dark Knight in a black and white format. These back-up strips are also collected in trade paperback form. Contributors to this section include Jim Lee, Harlan Ellison, Gene Ha, Dave Gibbons, and Jill Thompson.
Batman: Gotham Knights began in March 2000 and ran for a total of 74 issues. The last issue was published in April 2006. This title was among several which were cancelled at the conclusion of the Infinite Crisis storyline, as part of the "One Year Later" event focused around the upcoming 52 series.
(From Wikipedia)
All Issues can be found Here