By all appearances, a Greg Theakston/Pure Imagination collection, but this is from Spurlock's Vanguard Productions! Out of print.

From the publisher:

This collection of artist Steve Ditko's finest comics includes a wealth of sci-fi work done prior to his world-shaking creation with Stan Lee, Spider-Man. Ditko's eclectic, sometimes surrealistic art proves both futuristic and retro as he takes readers into the cosmos to find star-crossed lovers in the backstabbing debacle, "Dead Reckoning." Then, the deadliest space ship in the galaxy hovers menacingly over readers while invaders demand complete surrender in "The Conquered Earth!" These, plus "The Creature from Corpus Ill" and "The Juggernauts of Jupiter," are just a sampling of the pulse-pounding tales featured in this book.

This came from the collection of Steve Sherman, a writer,artist, puppet-maker, puppet-performer, and avid collector. Steve worked as Jack Kirby's assistant, at Filmation, and Sid and Marty Krofft, before forming his own company Puppet Studio in 1984 contributing to "Pee-Wee's Playhouse", "Men in Black 1 & 2", "Mighty Joe Young", "Muppets" and numerous other TV series and feature films.