1948 Press Photo Dr. George Kolstad who designed machine that shoots gamma rays.

Dr. George A. Kolstad, Yale University physicist, tests for the presence of radio frequency on the new atom-smashing proton accelerator he designed and built. The machine fires gamma rays or high-energy X-Rays, and the results can be watched directly. Compared with other atom-smashers, it's something like giving a soldier a machine gun instead of a rifle.

Photo is dated 1948.

Photo measures 7 x 9 inches.