SF Encyclopedia Picture Gallery
Otis Adelbert Kline and Allen S Kline. The Secret Kingdom (Medford, Oregon: Armchair Fiction, 2015) [dos: first appeared October-December 1929 Amazing Stories: pb/Monroe Eisenberg]
Image courtesy of Armchair Fiction
Otis Adelbert Kline and Allen S Kline. The Secret Kingdom (Medford, Oregon: Armchair Fiction, 2015) [dos: first appeared October-December 1929 Amazing Stories: pb/Monroe Eisenberg]
Image courtesy of Armchair Fiction