Tom Kalmaku's Casebook

Tom Kalmaku's Casebook was a personal journal owned by Ferris Aircraft employee, Tom Kalmaku. Soon after discovering that his best friend and co-worker, Hal Jordan, was actually the space-faring super-hero Green Lantern, Tom began keeping a record of all of GL's adventures. He maintained the journal long after Hal gave up the role of Green Lantern to evolve into the malevolent Parallax, and (presumably) still maintains it to this day.

First Appearance: Green Lantern (Volume 2) #12 Final Appearance: Green Lantern: Legacy - The Last Will and Testament of Hal Jordan