Out of print.
From the publisher:
Historical essays by Will Murray and Anthony Tollin. Plus The Society Amazonia (a lost radio thriller) by Edward Gruskin. Cover art by Richard G. Harris. "Deep in the Amazon on a quest for a lost kingdom, the Man of Bronze encounters The Mental Wizard and the incredible creature known only as 'Z'." and "Plunging into the Everglades, Doc Savage races against Doctor Light and Nazi agents as he searches for The Secret of the Su!"