found: His Carl Martin, 1988?:label (Carl Martin) container (b. 04-01-06 in Stone Gap, Va.; d. 05-10-79 in Detroit, Mich.)
found: Encyclopedia of popular music, accessed via Oxford reference online, April 2, 2018(Martin, Carl; born April 1, 1906, Big Stone Gap, Virginia; died May 10, 1979, Pontiac, Michigan; a multiinstrumentalist, he played in a string band but is also known for his work in the blues field; in 1930, Martin, along with his brother Roland and Howard Armstrong, recorded under the name of the Tennessee Chocolate Drops; a couple of years later, Martin moved to Chicago and joined the blues circuit, recording under his own name and accompanying artists as diverse as Tampa Red and Freddie Spruel)
found: Wikipedia, April 2, 2018(Carl Martin; born April 1 or 15, 1906, Big Stone Gap, Virginia; died May 10, 1979, Pontiac, Michigan; American Piedmont blues musician and vocalist proficient at playing several instruments and in various musical styles (repertoire encompassed blues, jazz, pop, country, and even non-English songs); made his earliest recordings as a member of several groups, including the Four Keys, the Tennessee Chocolate Drops, and the Wandering Troubadours; also performed in the trio Martin, Bogan, and Armstrong (with Ted Bogan and Howard Armstrong))