Partial known contents includes:
All 4 main stories from Mystery in Space #39 (August-September 1957)
The Human Time Capsule from House of Mystery #64 (July 1957)
The Man Who Hated His Hair & The Human Stallion from House of Secrets #5 (July-August 1957)
Professor Eureka - Atom Smasher/Walnuts 1 pager
Art credit from GCD index of original publication.