The Exact Sciences in Antiquity, 2nd Edition, O. Neugebauer, Dover Publications, New York,1969 (paperback reprint).
A History of Ancient Mathematical Astronomy, O. Neugebauer, Springer-Verlag, Berlin, 1975. Book of American Clocks by Brooks Palmer; A Treasury of American Clocks by Brooks Palmer. New York: The Macmillian Co. 1967. Revolution in Time: Clocks and the Making of the Modern World by David Landes. Cambridge, MA: Harvard University 1983 Press Ingenious Yankees by Donald Hoke. New York: Columbia University Press 1990 The American Clock by Edwin Battison. Greenich Connecticut: New York Graphic Society Limited 1973.
E-mail:9_mdesmarais@fair1.fairfield.edu