New York, Mayflower Press, 1906. First edition, first impression. Hardback. A near fine copy. An important early work of science fiction and perhaps the earliest example of a transgender protagonist in a science fiction novel. The book is also somewhat distinct in its presentation of a lesbian couple directly rather than via euphemism [Bleiler, SF Early Years, p127; Nevins, Jess - Online article] Uncommon, seemingly no copies at auction or on the market. Uncommon in academia. [9101, Hyraxia Books].