A jersey worn by NFL football legend Gayle Sayers; a side chair that may have graced the Lincoln White House; and a rare trio of books containing lithographs of American Indian chiefs.

While in Mobile, Alabama, ANTIQUES ROADSHOW host Mark L. Walberg and appraiser Don Cresswell visit the Audubon Bird Sanctuary on Dauphin Island to explore why collectors flock to bird prints by artists including James Audubon. At Mobile's Arthur R. Outlaw Convention Center, eagle-eyed experts spot such unusual finds as a circa 1969 jersey worn by NFL football legend Gayle Sayers when he played for the Chicago Bears; a side chair that may have graced the Lincoln White House; and a rare trio of books containing lithographs of American Indian chiefs whose portraits were painted when they came to Washington to negotiate treaties with the U.S. Department of War, valued at $70,000 to $90,000.