Harry Williams and Carl Pfeiffer Conducting LSD Experiment

(Original Caption) Dr. Harry L. Williams (right) examines the eyes of Dr. Carl Pfeiffer after administering LSD 25, the new drug which produces effects similar to those experienced by schizophrenics. One of the first reactions was dilation and contraction of the pupils with no relation to light conditions. After about an hour he began to experience inner trembling and anxiety. It was one of many tests being made at Emory University in Atlanta to learn more about mental illness.