L-R: Thomas Black, Howard Hughes, Noah Dietrich during the 1947 Senate War Investigating Committee hearings in Washington, D.C.

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). 

Long shot of the Lost City site (Pueblo Grande de Nevada), near Overton, Nevada, with the northwest arm of Lake Mead in the distance. The area is near the ruins of St. Thomas, Nevada, another nearby extinct town, submerged by Lake Mead.