Who wrote the Percy Jackson books?
The Heroes of Olympus The Heroes of Olympus is a pentalogy of adventure, mythological fiction and fantasy novels by American author Rick Riordan that collectively form a sequel series to the "Percy Jackson & the Olympians" series. This series details a conflict between Greek and Roman demigods and Gaea, the earth goddess. Riordan introduces Roman mythology into his sequel series as well as several new characters. The first book of the series, "The Lost Hero", was published on October 12, 2010. The final entry in the series, "The Blood of Olympus", was published on October 7, 2014.
L. Sprague de Camp Lyon Sprague de Camp ( ; 27 November 1907 – 6 November 2000), better known as L. Sprague de Camp, was an American writer of science fiction, fantasy, non-fiction and biography. In a career spanning 60 years, he wrote over 100 books, including novels and works of non-fiction, such as biographies of other fantasy authors. He was a major figure in science fiction in the 1930s and 1940s.