Norton, Andre [Norton, Alice Mary]. Secret of the Lost Race.
Sohl, Jerry. One Against Herculum.
New York: published by Ace Books, Inc. 1959.
Small octavo, pictorial wrappers. Ace double #D-381. First printings and first publications. Light wear to covers, light stress creasing, light wear to edges and corners; light wear to spine; light age tanned end pages; light age tanned text pages; Very Good.