References for: Theories of gravitation

Books:
  1. I B Cohen, Isaac Newton's papers and letters on natural philosophy and related documents (Cambridge, 1958).
  2. S W Hawking and W Israel (eds.), Three Hundred Years of Gravitation (1987).

JOC/EFR April 2003

MacTutor History of Mathematics
[http://www-history.mcs.st-andrews.ac.uk/HistTopics/References/Gravitation.html]