1971 Press Photo Ralph Nader with Mazzocchi and Wolfe at Philadelphia meeting

Consumer advocate Ralph Nader (right) gestures as he addresses an opening day session of the 5-day meeting of he American Association for the Advancement of Science in Philadelphia. Listening are Anthony Mazzocchi (left), labor leader of the Oil, Chemical and Atomic Workers Union, Washington, D.C. and Dr. Sidney M. Wolfe, Health Research Group, Washington, D.C.

Photo is dated 1971.

Photo measures 10.5 x 8.25 inches.