National Museum of Nuclear Science & History
Samual Watson was a machinist from Kirksy, Kentucky employed at Oak Ridge, Tennessee during the Manhattan Project.
N. J. Johnson worked for Hanley & Company.
Martin Moeller is the Senior Curator at the National Building Museum in Washington, D.C., where the exhibition “Secret Cities: The Architecture and Planning of the Manhattan Project” opened in 2018.
John Ryan was a staff worker at Los Alamos during the Manhattan Project.