His name is George Vinton Graham and while he is no "American Idol," his singing is considered an important example of Anglo-American folk music. The Graham recordings were made by ethnographer Sidney Robertson Cowell in 1938 and are found at the Library of Congress (American Memory).
A seventy year old recording of dulcimer music leads to the story of an Iowa ghost town and an uncommon musical instrument. The Thomas Mann recordings are courtesy of the American Folklife Center, Sidney Robertson Cowell Collection, Library of Congress. Sounds from July, 1937, in Ortonville, Iowa.