"So I picked it back up and said, 'It's got a hole on top, kind of beat up,'" he told KFSN. "OK, so I got those three photographs for 2 bucks."

"This is the first photograph ever discovered of Billy the Kid with the Regulators, period," said Jeff Aiello, executive director of "Billy the Kid: New Evidence," a documentary that will air at 9 p.m. Sunday on the National Geographic channel. "And that's significant in American history."