Adventure comics 496 Back cover by Giffen

Published 1983.
A mostly reprint Issue featuring
The Spectre and Wildcat in 'Menace of the Mystic Mastermind' originally published in 1968.
Superman. Supergirl and the Legion in 'Superman's Super-Courtship!' originally published in in 1962.(not pictured)
The Sandman in 'Dreams of Doom' originally published in 1942.
Captain Marvel Jr. in 'The Mystery of the Missing Newsstand!' originally published in 1974.
Aquaman in 'Underworld Reward, Part 2' originally published in 1969.

Front cover featured
Supergirl and the Legion in 'Supergirl's Greatest Challenge!' originally published in 1962
The Challengers of the Unknown in 'Tomorrow's Answers!' an original tale expanding the backstory of the Challengers' Origin.