Edgar Wayburn is a noted environmentalist who was elected president of the Sierra Club five times in the 1960s. One of America's legendary wilderness champions, Dr. Edgar Wayburn was a tenacious and tireless leader of the Sierra Club since the 1940s and perhaps the least-known yet most successful defender of America's natural heritage. Wikipedia*
On the C-SPAN Networks:
Edgar Wayburn has one video in the C-SPAN Video Library; the first appearance was a 1999 Speech.