National Museum of Nuclear Science & History
J. H. Leebens worked for the J.A. Jones Construction Company.
Arthur was a staff member at Los Alamos during the Manhattan Project.
Ethel Schwartz arrived as a bride with her husband, Manuel Schwartz, at Los Alamos in 1944. She worked in the office until she became pregnant with her son, Joel Schwartz, who was born there after the bombs were dropped on August 6, 1945.
