David Fischer (1920-2007) took part in the drafting of the statute of the International Atomic Energy Agency (IAEA) between 1954 and 1956, and he spent 25 years with the IAEA developing policies in connection with the Non-Proliferation Treaty, and working on nuclear safeguards and measures to prevent the military use of nuclear energy. His active involvement with the IAEA, and with a number of other groups continued at the time of original publication.