in The Amazing World of DC Comics (DC, 1976 series) #1 (February 1976) [the Superman image]Official DC fanzine, published by DC. Mostly articles about DC characters and their creators.
Pages 24-25. Two page horizontal centerfold of an unused cover for an issue of Superman's Girlfriend Lois Lane.
from Superman [Kellogg's] (DC, 1955 series) #1A (1955) [reformatted to fit magazine size]Pages 38-48. Originally published at 6.875" x 3.125" in color as a cereal giveaway.
Superman flying over a photo background. On the back cover.