Hyperion Publishing house.
Rick riordan
Rick Riordan is the author of the Percy Jackson series.If your a fan you might want to try The heroes of Olympus series (also greek mythology!) and the Kane chronicles (egyptian!)The ever-promising Mr. Rick Riordan!
I'm not aware of any books by Rick Riordan that have been written but not published. He is a prolific author with a number of successful series that have been released to the public.
he has published 12 books so far. 13 if you include his newest book coming out soon
Rick riodan is the author
So far he has worked on 4 books. Percy Jackson, The Red Pyramid, The Lost Hero, and The Maze of Heros.
mythology
Rick Riordan was 45 years old when The Red Pyramid was first published.
Son of Neptune by Rick Riordan was published on October 4, 2011.
"The Lost Hero" by Rick Riordan was published by Disney Hyperion, an imprint of Disney Publishing Worldwide.
Rick Riordan is interesting because he has wrote many books and they have all become famous.
The Lost Hero