THE OFFICIAL CRISIS ON INFINITE EARTHS INDEX #1
published by Eclipse Comics/Indepdendent Comics Group

• #1, March 1986, $1.75
Cover: George Perez (signed)
— Mangels is credited as one of the "Reviewers," though his name is misspelled as "Mangles.
other reviewers are Chuck Huber, Andrew McLaney, and Mike Tiefenbacher.
Editing is by Murray R. Ward, with writing by Lou Mougin and Mark Waid.
NOTE: This is some of the earliest work in Mangels' career, and his contributions — incorporated into the main text — are largely based on his articles in Amazing Heroes #91 (an issue guest-edited by Mark Waid).

THE OFFICIAL CRISIS ON INFINITE EARTHS CROSS-OVER INDEX #1
published by Eclipse Comics/Indepdendent Comics Group

• #1, July 1986, $1.75
Cover: Jan Duursema & Tom Mandrake (signed)
— Mangels is not credited in this issue, even though the "Monitor's Pre-Crisis Appearances" page and the "Crisis Flowchart" are significantly based on Mangels' articles in Amazing Heroes #91 as seen below.

AMAZING HEROES #91
published by Fantagraphics Books

• #91 (March 15, 1986)
— "Infinite Crisis on Earth Two" article and interview with Roy Thomas (3 pp.)
— "Monitoring the Monitor" article about Crisis on Infinite Earths character (2 pp.)
— "The Comprehensive Calendar to Crisis on Infinite Earths" article and timeline (6 pp.)