This is a quiz on the inside front cover with answers on the inside back cover. It is original, and was written when there were 186 issues of Superman and 337 issues of Action Comics (per the quiz).
This is cut by 3 and 2/3 pages: pages 2-4 and the first two panels and last two panels of page 6 of the original.
This is cut by 2/3 of a page: page 6 last two panels and page 7 first two panels from the original story. The original title was "Superman's New Power", although the story appeared in Superman Annual #7 with this title.
This is a portrait drawing of the Superman family of characters. A key to the characters appears at the bottom of the inside back cover.