United States. President (1974-1977 : Ford), Gerald R. Ford, United States. Office of the Federal Register (1975). “Gerald R. Ford: Containing the public messages, speeches, and statements of the President”
The Marriage of Heaven and Hell "A Memorable Fancy" plate 14 (1790 - 1793). Inspired the title of Aldous Huxley's 1954 book about drug experimentation, The Doors of Perception, which in turn inspired the name of the 1960s rock group The Doors.
M. Scott Peck (2002). “The Road Less Traveled, 25th Anniversary Edition: A New Psychology of Love, Traditional Values, and Spiritual Growth”, p.97, Simon and Schuster