Joshua Ian "Josh" Schwartz (born August 6, 1976) is an American screenwriter and television producer, he's known for developing The CW's series "Gossip Girl" based on the book series of the same name, Gossip Girl is an American young adult novel series written by Cecily von Ziegesar and published by Little, Brown and Company, a subsidiary of which organization?
Josh Schwartz:  Schwartz is also known for developing The CW's series "Gossip Girl" based on the book series of the same name and for co-creating NBC's action-comedy-spy series, "Chuck". Gossip Girl (novel series): Gossip Girl is an American young adult novel series written by Cecily von Ziegesar and published by Little, Brown and Company, a subsidiary of the Hachette Group.
Hachette Group