4. Atlantic City (1)

Part 1 of 3 in Atlantic City features a Walt Whitman memoir inscribed by the poet; a bronze-and-marble statue by French sculptor Albert Ernest Carrier Belleuse (1824-87); and an oil painting by 19th-century artist Cornelius Krieghoff valued at $200,000-$350,000. Also: Arlie Sulka visits the Wheaton Arts Center in Millville, N.J., to check out antique paperweights; Mark L. Wahlberg tries glass blowing.