: A detailed historical introduction from Daniel H.
Green's technology, history and aviation web-site.
AIR WAR IN VIETNAM: A very brief overview from the U.S. Centennial of Flight Commission.
AIR WAR VIETNAM: A Service-oriented web history hosted by MSgt USAF (Ret.) Mark D. Bacon.
OPERATION RANCH HAND: HERBICIDES IN SOUTH EAST ASIA, 1961-1971:
A short essay by Dr. William A. Buckingham, Jr.