Superman figure drawn by Neal Adams. (Info per Nick Caputo.)
Bridwell plot, Post script per On the Drawing Board #65 (March 1968). Parodies of Fantastic Four, Spider-Man and Sub-Mariner. Includes an appearance by Superman.
Story across 24 pages, but page 8 is a 2/3-page and pages 16 and 24 are 1/2-pages.