New York: Experimenter Publishing Company, 1926. Large octavo, single issue, cover by Frank R. Paul, pictorial wrappers. Pulp magazine, bedsheet format. Includes part 1 of "Station X" by George Winsor, "The Eggs From Lake Tanganyika" by Curt Siodmak (which is the cover illustration), other fiction by H. G. Wells, Garrett Serviss, Edgar Allan Poe, Jules Verne and others. [Reference: Tymm and Ashley, Science Fiction, Fantasy, and Weird Fiction Magazines, pp. 14-49].