[1] JACQUES BESSON, _Des instruments mathématiques, et méchaniques,
servants à l'intelligence de plusiers choses difficiles, &
necessaires à toutes républiques_, 1st ed. (Orleans, 1569).
[Also available in later editions in French, German, and
Spanish.]
[2] J. FOSTER PETREE, introduction, _Henry Maudslay, 1771-1831, and
Maudslay Sons and Field, Ltd._ (London: The Maudslay Society,
1949).
[3] _American Machinist_ (September 28, 1916), vol. 45, no. 13,
pp. 529-531.
[4] U.S. patent 10383 issued to Joseph Nason of New York, January 3,
1854.
[5] U.S. patent 293930 issued to Charles Vander Woerd of Waltham,
Massachusetts, February 19, 1884.
[6] U.S. patent 1874592, filed June 8, 1929, issued to C. G. Olson of
Chicago, Illinois, August 30, 1932, and assigned to the Illinois
Tool Works, also of Chicago.
[7] U.S. patent 1901926, filed February 16, 1928, issued to C. G.
Olson of Chicago, Illinois, March 21, 1933, and assigned to the
Illinois Tool Works, also of Chicago.
[8] U.S. patent 1899654, filed August 31, 1931, issued to F. A. Ward
of Detroit, Michigan, February 28, 1933, and assigned to the
Gear Grinding Company of Detroit, Michigan.
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