This extensive collection of Krenkel art was supervised & designed by the artist himself just before his death. Collects pen & ink and pencil drawings. Sections on saurians, early mammals, sabretooths, cavemen, Conan, Swordsmen, Tarzan, Burroughs, Pellucidar, Barsoom, and science fiction. Introduction by William Stout. Published simultaneously in paperback, this hardcover printing was very limited.