Description given with photo: "Radar Installed on Passenger Planes Culver City, Calif. -- Radar safety control system (cabinet, left, center) for passenger planes, demonstrated by Howard Hughes in a trans-world airline plane, at Culver City, May 1st. Radar, with 500 and 2,000 foot warning signals, tells the pilot when he is approaching obstacles. Equipment is being installed in planes flying routes from San Francisco eastward to Shanghai. Credit (ACME) 5/3/47."

From the Nan Doughty Photograph Collection (PH-00240)

From the Sister Klaryta Antoszewska Photograph Collection (PH-00352). The presentation slide reads, "Off-site radiation exposure review project organization chart"

From the Sister Klaryta Antoszewska Photograph Collection (PH-00352). The presentation slide title reads, "Underground nuclear test execution sequence"

From the Sister Klaryta Antoszewska Photograph Collection (PH-00352). The presentation slide title reads, "Nevada  operations office interagency relationships" 

From the Sister Klaryta Antoszewska Photograph Collection (PH-00352). The presentation slide reads, "Total announced tests and radiation measured off the test range complex"