BOSTON (Reuters) – Chris Strachwitz discovered the first performer for his Arhoolie Records label by quizzing roadside field hands, a prosperous cotton farmer named Mr. Tom Moore, and a man called Peg Leg at a railroad station in Navasota, Texas. As Strachwitz tells it, Peg Leg identified a highway worker and former tenant farmer who entertained local folks: Mance Lipscomb. "Mance Lipscomb, Texas Sharecropper and Songster," was recorded in 1960 in the musician's shotgun house, and it launched Lipscomb into the surging U.S. folk-music revival. …