Marvel June, 1965
Reprints from X-Men (1st Series) #1, Strange Tales (1st Series) #115, The Avengers #1, Amazing Adult Fantasy #8, and The Incredible Hulk #3; Origin of X-Men; Origin of Doctor Strange (Stephen Strange); Origin of The Avengers; Listed as Marvel Tales Annual #2 in indicia
X-Men; Hulk: The Ringmaster; The Origin of Dr. Strange; A Monster Among Us; The Coming of the Avengers!
Jack Kirby, Steve Ditko