Newcomb, Simon. 1888. Sidereal Messenger 7: 65.
–. 1903. The Reminiscences of an Astronomer. Boston: Houghton Mifflin Co.
[Newton, Isaac] David Brewster. 1855. Memoirs of the Life, Writings, and Discoveries of Sir Isaac Newton. London: T. Constable and Co.
Newton, Isaac. 1706. Optice (Latin), 2nd ed. London: Sam Smith & Benjamin Walford.
–. 1726. Principia Mathematica (Latin), 3rd ed. London: William & John Innys.
– 1728. Chronologies. London: Pater-noster Row.
– 1730. Optiks, 4th ed. London: Westend of St. Pauls.
– 1733. The Prophesies of Daniel. London: Pater-noster Row.
–. 1958. Papers and Letters on Natural Philosophy. Ed. Bernard Cohen. Cambridge, MA: Harvard University Press.
–. 1962. Principia Vol. II: The System of the World [1687]. Berkeley:
University of California Press.
–. 1992. Principia Mathematica (English) [1729]. Norwalk, CT: Easton Press.
Norris, Christopher. 1991. Deconstruction: Theory & Practice. New York: Routledge.
O’Neill, Gerard K. 1976. The High Frontier: Human Colonies in Space. New York: William Morrow & Co.
Planck, Max. 1931. The Universe in the Light of Modern Physics. London: Allen & Unwin Ltd.
–. 1950. A Scientific Autobiography (English). London: Williams & Norgate, Ltd.
[Planck, Max] 1996. Quoted by Friedrich Katscher in The Endless Frontier. Scientific American, February, p. 10.
Ptolemy, Claudius. 1551. Almagest [c. 150]. Basilieae, Basel.
Salaam, Abdus. 1987. The Future of Science in Islamic Countries. Speech given at the Fifth Islamic Summit in Kuwait, http://www.alislam.org/library/salam-2.
Schwippell, J. 1992. Christian Doppler and the Royal Bohemian Society of Sciences. In The Phenomenon of Doppler. Prague.
Sciama, Dennis. 1971. Modern Cosmology. Cambridge, UK: Cambridge University Press.
Shamos, Morris H., ed. 1959. Great Experiments in Physics. New York: Dover.
Shapley, Harlow, and Heber D. Curtis. 1921. The Scale of the Universe. Washington, DC: National Academy of Sciences.
Sullivan, W. T. III, and B. J. Cohen, eds. 1999. Preserving the Astronomical Sky. San Francisco: Astronomical Society of the Pacific.
Taylor, Jane. 1925. Prose and Poetry. London: H. Milford.
Tipler, Frank J. 1997. The Physics of Immortality. New York: Anchor.
Tucson City Council. 1994. Tucson/Pima County Outdoor Lighting Code, Ordinance No. 8210. Tucson, AZ: International Dark Sky Association.
[Twain, Mark] Kipling, Rudyard. 1899. An Interview with Mark Twain. From Sea to Sea. New York: Doubleday & McClure Company.
Twain, Mark. 1935. Mark Twain’s Notebook.
van Helden, Albert, trans. 1989. Sidereus Nuncius. Chicago: University of Chicago Press.
Venturi, C. G., ed. 1818.Memoire e Lettere, vol. 1.Modena: G. Vincenzi.
von Braun, Werner. 1971. Space Frontier [1963]. New York: Holt, Rinehart and Winston.
Wells, David A., ed. 1852. Annual of Scientific Discovery. Boston: Gould and Lincoln.
White, Andrew Dickerson. 1993. A History of the Warfare of Science with Theology in Christendom [1896]. Buffalo, NY: Prometheus Books.
Wilford, J. N. 1999. Rarely Bested Astronomers Are Stumped by a Tiny Light. The New York Times, August 17.
Wright, Thomas. 1750. An Original Theory of the Universe. London: H. Chapelle.