Plot: Part 2 of 3 in El Paso features a collection of signed Andy Warhol soup cans and pop art; a collection of signed Cormac McCarthy first editions; and a circa 1570 Lotto Oushak rug that was purchased for $350 and is now worth between $30,000 and $40,000. Also: the impact that the Mississippi Rifle had on the Mexican-American War and the collector's market for the rifle