National Museum of Nuclear Science & History
Attended the University of Pennsylvania.
Gilbert Mathis was an electrical engineer at Los Alamos from 1943 to 1946. He was recruited for the Manhattan Project as a member of the US Army Signal Corps.
J. G. LeSieur, Jr. worked for the United States Engineer District Office.
Lewis worked for Stone and Webster Engineering Corporation.
L. F. Preston worked for the United States Engineer District Office.