Two circa 1958 prototype chairs designed by the guest’s father; a salesman’s sample canoe; and a 1941 Martin guitar, played by the guest’s great-uncle.

ANTIQUES ROADSHOW host Mark L. Walberg and appraiser Suzanne Perrault visit a unique memorial to renowned potter Artus Van Briggle: a building on the Colorado College campus decorated inside and out with Van Briggle tiles. Program highlights include two circa 1958 prototype chairs designed by the guest's father when he worked for noted modernist George Nelson; a turn-of-the-century salesman's sample canoe; and a 1941 Martin guitar, played live on the radio by the guest's great-uncle, "Cowboy Slim," and valued at $65,000 to $75,000.