Beatles First U.S. Tour.

Never-before-seen color photos from The Beatles' first U.S. tour are headed to the auction block.

There are 65 color slides in all, which is unusual, because color film was expensive and most of the photos of the group from that era are in black and white. Included in the collection are performance shots and close-ups from a press conference at the Sahara Hotel in Las Vegas. They were taken by Dr. Robert Beck, who died in 2002 and left them in his Hollywood home.

The photos will be sold by Omega Auctions in England on March 22nd -- exactly 50 years after The Beatles released their first album.