River of Eternity is an early version of what became the Riverworld series by Philip José Farmer. The original "Riverworld" story was a 150,000-word novel titled Owe for the Flesh, which ended with the protagonist finding the tower at the end of the river. In the mid-1950s, Farmer entered it in a science fiction novel …
The Gate of Time is an alternate history novel by Philip José Farmer. It was first published in paperback editions by Belmont Books in the United States in October 1966 and by Quartet in the United Kingdom in September 1974. Later it was revised and expanded as Two Hawks from Earth, in which form it was first …
Greatheart Silver is a 1982 science fiction novel written by Philip José Farmer. It is a collection of three of Farmer's stories from the series Weird Heroes published in the 1970s with the title character, a lineal descendant of Thomas Jefferson and Sally Hemings, working for the Acme Zeppelin Corporation as a blimp …