The Great Fetish
L. Sprague de Camp
 The book is both an adventure story and a satire on the scientific dispute over Creationism. It is set on the planet Kforri, where descendants of space travelers from Earth have reverted to a pre-technological society. The truth of their origin has faded into legend, and as a result the story of the space voyage and the scientific theory of evolution have become competing accounts of the genesis of humanity. In an ironic reversal, the Religionists hold that man evolved from the native animals of Kforri, while skeptics against the received dogma, known as the Anti-Evolutionists, are more open to the spaceflight theory. Schoolteacher Marko Prokopiu, has been found guilty of teaching the Anti-Evolutionist heresy, as established by the Holy Syncretic Church, but escapes from prison. He embarks on a quest to discover the truth by finding the Great Fetish, said to contain the real story. A parallel motivation is to recover his wife Petronela, who has run off with his friend Chet Mongami during his imprisonment. Marko joins a caravan and falls in with the philosopher Doctor Halran, a professor who is experimenting with a new hot air balloon. The two are launched in the balloon and land by accident on the Island of Mnaen, populated only by female 'witches' who guard The Great Fetish. This is revealed to be a collection of documents with microscopically-reduced writing. Escaping from the witches, who follow the worship of the cult of Einstein, they attend a great philosophical convention. Using an experimental microscope being demonstrated at the convention, the documents reveal information about the origins of Kforri, validating the truth of the anti-evolutionists. They further show that Kforri gained its name from that given by the discovering expedition (K40 became Kforri), and that the expedition members disagreed and dispersed. They eventually formed nations with cultures and languages derived from their native ones. The name of the Island of Mnaen, for instance, was based on the earthly Manhattan. Using the documents, the inhabitants of Kforri rapidly advance their technology. They eventually hope to build spaceships to travel back to Earth.