Story: "The Planet of Doomed Men!" (15 Pages)

Credits:

John Broome (plot, script)
Gil Kane (pencils)
Murphy Anderson (inks)
Julius Schwartz (edits)

Feature Character:

Green Lantern (Hal Jordan; last in Brave and the Bold #30)

Supporting Characters:

Guardians of the Universe (first appearance; last in flashback in Green Lantern: Emerald Dawn II #6/Green Lantern Vol. 4 #35; see Comment)
Abin Sur (in flashback; appearance same as Showcase #22)

Villain:

The Dryg (first appearance; a sixty-feet high gorilla-like creature of Calor)

Other Characters:

Calorians (first appearance; an alien race of the planet Calor)

Comments: Various details concerning Green Lantern's origin have been retconned over the years. According to this story, Hal Jordan is not yet aware of the Guardians of the Universe. In this story they bring an energy dublicate of Hal Jordan to Oa and erases the memory of the meeting from his mind until it is proper for him to learn about them. Later retcons have Hal Jordan meeting and remembering the Guardians a lot earlier.
The events of their last appearance in Green Lantern: Emerald Dawn II #6 might no longer be in-continuity following the retcon of Hal Jordan's origin in Green Lantern Vol. 4 #29-#35.

Reprint Info: This story has been reprinted in the following books:
Secret Origins #1 (1961)
DC Special Blue Ribbon Digest #4 (September-October 1980)
Green Lantern Archives Vol. 1 HC (1993)
Showcase Presents: Green Lantern Vol. 1 TP (2005) (black & white)
Green Lantern: The Greatest Stories Ever Told TP (2006)

Second Story: "Menace of the Giant Puppet!" (10 Pages)

Credits:

John Broome (plot, script)
Gil Kane (pencils)
Joe Giella (inks)
Julius Schwartz (edits)

Feature Character:

Green Lantern (Hal Jordan)

Supporting Character:

Carol Ferris

Villains:

Puppet Master (Jordan Weir; first appearance; next in Justice League of America Vol. 1 #5)
Biffy (first appearance; a small-time crook)

Reprint Info: This story has been reprinted in the following books:
Wanted: The World's Most Dangerous Super-Villains #1 (July-August 1972)
Green Lantern Archives Vol. 1 HC (1993)
Showcase Presents: Green Lantern Vol. 1 TP (2005) (black & white)