Comic Title: Harley Quinn:Our Worlds at War #1
Publisher: DC
Cover Date: October 2001
On Sale Date: August 15, 2001 Direct Market Date August 15, 2001
Source: Previews, Vol. 11 #6 (#150)

Direct Market Date August 15, 2001
Source: ComicList, New Comic Book Releases List for Wednesday, August 15, 2001

Direct Market Date August 15, 2001
Source: Diamond Shipping List, Shipping This Week: August 15

Cover Price: $2.95
Page Count: 48
Editor: Matt Idelson

Title: "Harley Quinn's Pal Jimmy Olsen"
Pages: 38

Feature(s):
Harley Quinn (Post-Crisis)

Crossover Event:
Our Worlds at War

Writer: Karl Kesel
Artist: Aron Wiesenfeld
Artist: Paul Grist
Artist: Paul Chadwick
Penciller: Amanda Conner
Inker: Jimmy Palmiotti
Artist/Letterer: Steven Lieber
Letterer: Janice Chiang
Letterer: Kurt Hathaway
Letterer: John E. Workman, Jr.
Colorist: Rob Ro
Colorist: Alex Bleyaert

Reprinted In:
Harley Quinn:Night and Day TPB (2013)