Cover of Analog magazine featuring a giant sandworm from “The Prophet of Dune” by Frank Herbert, with a desert landscape and small figures near the creature.

Cover of Frank Herbert’s novel “Dune,” featuring large sand dunes and a group of figures in a desert landscape, with text announcing it as the winner of the Hugo and Nebula awards for best science fiction novel of the year.

Cover of the book “Dune” by Frank Herbert, featuring the title in ornate script over an abstract rendering of dunes or a mountainous landscape in shades of violet and blue.

Cover of “Analog Science Fiction and Fact” magazine from April 1974, featuring an illustration of a futuristic vehicle flying over a rugged, volcanic landscape. The magazine’s logo and the title “HOT SPOT” by Brenda Pearce are visible

Cover of “Analog Science Fiction/Science Fact” magazine, August 1974 issue, featuring a knight in futuristic armor with a lance riding a large alien mammal, with two humanoid figures in distress in the background, under an orange sky

Cover of July 1965 issue of Analog Science Fiction and Fact magazine, featuring an illustration for “Trader Team” by Poul Anderson. The artwork depicts a large, blue anthropomorphic reptilian creature sitting with a dog-like creature on its shoulder

Various cover illustrations by John Schoenherr [reddit.com]