National Museum of Nuclear Science & History
L. A. Castellanos worked for the J.A. Jones Construction Company.
Donald MacMillan arrived in Los Alamos on May 14, 1944. He was an avid figure skater, and worked for Los Alamos National Laboratory for many years.
Cummings worked for Stone and Webster Engineering Corporation.
William “Willy” Higinbotham (1910-1994) was an American physicist. During the war, Higinbotham worked at Los Alamos as leader of the Electronics Group in the Weapon Physics Division.
