(165) Marek, Kurt W., Yestermorrow. (New York: Alfred A. Knopf, 1961.)
(166) Medawar, P. В., The Future of Man, (New York: New American Library, 1959.)
(167) Michael, Donald N., The Unprepared Society. (New York: Basic Books, 1968.)
(168) Pauwels, Louis, and Bergier, Jacques, The Morning of the Magicians. (New York: Stein and Day, 1963.)
(169) Peccei, Aurelio, The Chasm Ahead. (London: Macmillan, 1969.)
(170) Platt, John Rader, The Step to Man. (New York: John Wiley, 1966.)
(171) Polak, Fred L., The Image of the Future. (New York: Oceana Publications, 1961.) (2 vols.)
(172) Rimer, Peter, The Society of Space. (New York: Macmillan, 1961.)
(173) Rodwin, Lloyd, (ed.), The Future Metropolis. (New York: George Braziller, 1961.)
(174) Shinn, Roger L., Tangled World. (New York: Charles Scribner's Sons, 1965.)