he was a self-taught man :) hope this helped
Donald L. O'Toole died in 1964.
Donald L. Ritter was born in 1940.
Donald L. Coburn was born in 1938.
L. Donald Shields was born in 1936.
Donald L. Katz died in 1989.
Donald L. Katz was born in 1907.
Donald L. Ivers was born in 1941.
Donald L. Hollowell died in 2004.
Donald L. Hollowell was born in 1917.
Donald L. Jackson died in 1981.
Donald L. Jackson was born in 1910.
Donald L. Rust was born in 1932.