The only work of sci-fi from an author normally associated with more sedentary works on transport; this Lost Race tale set in the Yukon Territory, 'within a caldera heated by volcanic action, a technologically advanced but priest-ridden civilization of "white Indians", originally from ancient Egypt, uses its helicopter-like airships and strange Weapons to attempt to protect its gold from the outer world.' (The Encyclopedia of Science Fiction).
First edition. 8vo. Original boards. Dust-jacket price clipped. Three digits at base of spine indicates this is an early reprint.
Hubin listed title with strong sci-fi overtones in which an Oriental cadre of secret masters aspire to immortality through imbibing an elixir of unknown provenance, and by using advanced technology to preserve themselves. They threaten the world, but are defeated in the end (Blieler p61, the only title by this author listed).