Spider-Man creator Stan Lee plans to sell part of his personal collection of comics and art this summer.

"This is material Stan has kept all these years in his reference collection," John Petty, director of Heritage Comics Auctions of Dallas, said Wednesday.

Items for sale will include Lee's collection of original art from the Spider-Man newspaper strip and personal reference copies of key Marvel Comics issues.

The sale will be conducted during the Wizard World comic book collectors convention July 4-7 in Chicago.

Lee, 79, was executive producer of the new film Spider-Man and has consulted on other upcoming films based on his characters, including The Hulk and Daredevil, along with a sequel to the blockbuster X-Men.

He is also developing original characters and ideas at his new production company, POW! Entertainment.