Question: When was the first percy jackson book published?

context: No context provided
question: When was the hardcover version of the first Percy Jackson book originally published in English?
short_answers: July 1, 2005
context: No context provided
question: When was the paperback version of the first Percy Jackson book originally published in English?
short_answers: April 1, 2006

Answer: Percy Jackson & the Olympians, often shortened to Percy Jackson, PJO, or PJatO is a pentalogy of fantasy adventure novels written by American author Rick Riordan, and the first book series in the Camp Half-Blood Chronicles. The Lightning Thief is the first book in the series and was released on July 1, 2005 in hardcover. It was released in paperback version on April 1, 2006.