Harvard University Collection of Historical Scientific Instruments

• 
  via
  The Quest for Longitude: The Proceedings of the Longitude Symposium Harvard University, Cambridge, Massachusetts November 4-6, 1993
  by William J. H. Andrewes, Harvard University Collection of Historical Scientific Instruments, National Association of Watch and Clock Collectors Seminar 1993 Cambr, Longitude Symposium (1993 Harvard University)
  Hardcover, Collection of Histroic Scientific, ISBN 0964432900 (0-9644329-0-0)