- Gardner Fox
- Mike Sekowsky
- Bernard Sachs
- Ira Schnapp (page 1); Gaspar Saladino
- Justice League of America [Aquaman [Arthur Curry]; Atom [Ray Palmer]; Batman [Bruce Wayne]; The Flash [Barry Allen]; Green Arrow [Oliver Queen]; Green Lantern [Hal Jordan]; Hawkman [Katar Hol] (joins); Martian Manhunter [J'onn J'onzz]; Snapper Carr; Superman [Clark Kent]; Wonder Woman[Diana Prince]]; Hawkgirl [Shayera Hol] (cameo); Joe Perry (villain); Super-Duper (villain)
- Hawkman's first case as a member of the JLA involves low-level crook Joe Parry who has come into possession of an alien machine with which he creates three different threats against the JLA.
Lettering credits from reprint in JLA Archives.
Story is told in three chapters: unnumbered part one (11.67 pp.), Part Two 3.67 pp.), Part Three (7.67 pp.)
- Julie Schwartz ?
Letters from Mike Friedrich (future comics writer), Kenneth S. Gallagher, Guy H. Lillian, and Ken Ahlstrand.