On-sale date from Comic Reader #76 and copyright registration.
Page 8 of the story is only 2/3 of a page, the rest given over to a house ad for The Adventures of Jerry Lewis #117. Page 23 is also 2/3 of a page, its remainder given over to a promo blurb for the next issue.
Origin of the Hot Wheels Club.
2 gags. Letters credit from Tom Orzechowski.