National Museum of Nuclear Science & History
W. O. Nelson worked for the J.A. Jones Construction Company.
Winston was born in April, 1921 in Washburn, WI (where his father was the mayor) and graduated from Washburn High School, Washburn, WI in 1939.
Riser worked at the 200 West Area at Hanford during the Manhattan Project.
Lawrence S. O’Rourke began working on the Manhattan Project at Columbia University after he was called up from the Army Reserves in 1943.
