Steve Ditko cover inks credit from Nick Caputo via the GCD Errors list, February 2009.
Groot next appears in Marvel Monsters: Monsters on the Prowl (Marvel, 2005 series) #1 in a flashback story, he then appeared in modern continuity in Nick Fury's Howling Commandos (Marvel, 2005 series) #2 (January 2006) and eventually became a member of the second incarnation of the Guardians of the Galaxy. The story is pages 3-7, 10-11 of the comic (the pages of the story are numbered 1 to 7).
Lettering credit from Monsters (2017 series) No. 1.
Text story with illustration. Text story is pages 8, 26 of comic (pages of story not numbered).
Job number from Dr. Michael J. Vassallo via the Atlas/Timely discussion group. This is a retelling of "I Captured the Abominable Snowman!" drawn by Steve Ditko in Strange Worlds (Marvel, 1958 series) #1 (December 1958). The story is pages 12-14, 16-18 of the comic (the pages of the story are numbered 1 to 5, and the last page of the story is not numbered).
Job number from Dr. Michael J. Vassallo via the Atlas/Timely discussion group. The story is pages 20-24 of the comic (the pages of the story are numbered 1 to 5).
Job number from Dr. Michael J. Vassallo via the Atlas/Timely discussion group. The story is pages 28-32 of the comic (the pages of the story are numbered 1 to 4, and the last page of the story is not numbered).