The Green Lantern Chronicles v04 (2012)

The 1960s adventures of Green Lantern continue in this new volume reprinting his stories in their original order of publication.
Included are the story of Green Lantern's oath, a battle with Sinestro, a guest-appearance by The Flash and the debut of the villainous Sonar.
Collects Green Lantern (1960-1986) #15-20.