revived partly by his editorial work on and continuation of Robert E. Howard's Conan cycle. He also edited a series of fantasy anthologies credited with helping to spark the renaissance of heroic fantasy in the late 1960s. De Camp also created three noteworthy sword and sorcery sequences. The Pusadian series (from 1951), composed of the novel The Tritonian Ring and several short stories, is set in an antediluvian era similar to Howard's. More substantial is the Novarian series (from 1968), of which the core is the Reluctant King trilogy, beginning with The Goblin Tower, de Camp's most accomplished effort in the genre, continuing in The Clocks of Iraz, and concluding with The Unbeheaded King. The trilogy features the adventurer Jorian, ex-king of Xylar. Jorian's world is an alternate reality to which our own serves as an afterlife. Other novels in the sequence include The Fallible Fiend, a satire told from the point of view of a demon, and The Honorable Barbarian, a follow-up to the trilogy featuring Jorian's brother as the hero. The Incorporated Knight series comprises some 1970s short stories by de Camp and two novels written in collaboration with Catherine Crook de Camp, The Incorporated Knight (1988) and The Pixilated Peeress (1991). The early short stories were incorporated into the first of these. The sequence is set in the medieval era of another alternate world sharing the geography of our own, but in which a Neapolitan empire filled the role of Rome and no universal religion like Christianity ever arose, leaving its nations split among competing pagan sects. The setting is borrowed in part from Mandeville's Travels. Historical fiction De Camp also wrote historical fiction set in the era of classical antiquity from the height of the First Persian Empire to the waning of the Hellenistic period. Five novels published by Doubleday from 1958 to 1969 form a loosely connected series based on their common setting and occasional cross references. They were also linked by a common focus on the advancement of scientific knowledge, de Camp's chosen protagonists being explorers, artisans, engineers, innovators and practical philosophers rather than famous names from antiquity, who are relegated to secondary roles. The best known of his historical novels is The Dragon of the Ishtar Gate. Nonfiction De Camp's first book was Inventions and Their Management, co-written with Alf K. Berle and published by International Textbook Company in 1937: a 733-page book