From the Sister Klaryta Antoszewska Photograph Collection (PH-00352). The slide reads: "Comparison of the cumulative estimated dose with diagnostic x-rays 1951 to 1958.

From the Sister Klaryta Antoszewska Photograph Collection (PH-00352). 

From the Sister Klaryta Antoszewska Photograph Collection (PH-00352). 

From the Sister Klaryta Antoszewska Photograph Collection (PH-00352). 

The Hughes Aircraft HK-1 or "Flying Boat" wing assembly being completed in a hangar in Hughes' factory in Culver City.

The black and white view of Howard Hughes and his crew being surrounded by crowds as they exit the Lockheed 14 aircraft after finishing the Around the World flight at Floyd Bennett Airfield in New York. "Description printed on photograph's accompanying sheet of paper: A scene at Floyd Bennett Field as Howard Hughes and his crew landed after completing a round the world flight. 7-14-38 (Press Association)."

The black and white view of Howard Hughes and his crew at Floyd Bennett Field in New York. Typed onto a piece of paper attached to the image: "Before Hughes hopped off for Paris. Left to right: Edward Lund, Flight Engineer, Howard Hughes, Grover Whalen, Harry Connor, Navigator and Dick Stoddard Radio Engineer. At Floyd Bennett Airport 7/10/38."