[7] York County Records, Virginia Deeds, Orders, and Wills, no. 13 (1706–1710), p. 248; and the inventory of Amasa Thompson in Lawrence B. Romaine, "A Yankee Carpenter and His Tools," The Chronicle of the Early American Industries Association (July 1953), vol. 6, no. 3, pp. 33–34.
[8] Reports by the Juries: Exhibition of the Works of Industry of All Nations, 1851 (London, 1852), p. 485.
[9] U.S. patent specifications cited in this paragraph may be found at the U.S. Patent Office, Washington, D.C.
[10] In 1865 George Parr in his application for an improved screwdriver stated categorically that the scalloped blade served no purpose other than decoration. See U.S. patent 45,854, dated January 10, 1865.
[11] Francis A. Walker, ed., United States Centennial Commission, International Exhibition, 1876, Reports and Awards, Group XV (Philadelphia, 1877), p. 5.
[12] Ibid., p. 6.
[13] Ibid., pp. 9–10.
[14] Ibid., pp. 11–12.
[15] Ibid., pp. 14, 44, 5.
[16] Ibid., p. 13.