DALLAS - Relatives of legendary sharpshooter Annie Oakley are offering a collection of items - including her Stetson hat, guns, letters, and photographs - in an auction that one expert says hits the mark for its breadth and sentimental value.

On Sunday, Heritage Auctions will offer about 100 Oakley-related items in Dallas, including a 12-gauge Parker Brothers shotgun expected to bring about $100,000. Two Marlin .22 caliber rifles are expected to sell for more than $20,000 each.