Part 1 of 3 in Biloxi, Miss., features a circa 1950 Walter Anderson linocut; an 1899 Buffalo Bill poster; and a 1928 bronze sculpture of Russian Ballet dancers that's valued at $100,000 to $150,000. Also: a visit to Biloxi's Ohr-O'Keefe Museum of Art highlights the pottery of the "Mad Potter of Biloxi," George Ohr (1857 to 1918).