Publication: Ace Books, Inc, 1960, New York
First edition. PBO. Ace D-436. Ace Double, bound with Tom West's The Phantom Pistoleer, also a PBO. Pages lightly and evenly tanned, else near fine in pictorial wrappers. In "The Challenger," Marshal Engles and his brothers clean up Tombstone. Mel Clary and his brother Billy have other ideas. In "The Phantom Pistoleer," "His ghost packed a .45!"
Inventory Number: 14628