Perrigo: Change Gear Devices. N. Y., 1915. Camus: Treatise on the Teeth of Wheels (English Translation). London, 1837. Willis: Principles of Mechanism. London, 1841. Fairbairn: Mills and Millwork. London, 1863. Pole: Life of Sir William Fairbairn. London, 1877. Memoir of John George Bodmer, in Transactions of the Institution of Civil Engineers, Vol. XXVIII. London, 1869. Farey: Treatise on the Steam Engine. London, 1827. Price: Fire and Thief-proof Depositories, and Locks and Keys. London, 1856. Baker: Elements of Mechanism. London, 1858. Bishop: History of American Manufactures. 3 Vols. Philadelphia, 1868. Weeden: Economic and Social History of New England. 2 Vols. Boston, 1890. Field: State of Rhode Island and Providence Plantations. Goodrich: History of Pawtucket, R. I. Pawtucket, 1876. Wilkinson: Memoir of the Wilkinson Family. Jacksonville, Ill., 1869. Fitch: Report on Manufactures of Interchangeable Mechanism, in U. S. Census, 1880. Volume on “Manufactures.” Durfee: “Development of the Art of Interchangeable Construction in Mechanism,” in Transactions of the American Society of Mechanical Engineers, Vol. XIV, p. 1225. Olmstead: Memoir of Eli Whitney. New Haven, 1846. Woodworth: American Tool Making and Interchangeable Manufacturing. N. Y., 1911. Blake: History of Hamden, Conn. New Haven, 1888. Blake: New Haven Colony Historical Papers, Vol. V. New Haven, 1894. North: Memoir of Simeon North. Concord, 1913. Washburn: Manufacturing and Mechanical Industries of Worcester. Philadelphia, 1889. Iles: Leading American Inventors. N. Y., 1912. Parton: Captains of Industry. Boston, 1891. Van Slyck: Representatives of New England. Boston, 1871. Goddard: Eminent Engineers. N. Y., 1905. Lathrop: The Brass Industry. Shelton, Conn., 1909. Anderson: The Town and City of Waterbury. 3 Vols. New Haven, 1896. Evans: The Young Millwright and Miller’s Guide. Philadelphia, 1826. Freedley: Philadelphia and its Manufactures. Philadelphia, 1858. Cist: Cincinnati in 1851. Cincinnati, 1851. Cist: Cincinnati in 1859. Cincinnati, 1859. Porter: Engineering Reminiscences. N. Y., 1908. Transactions of the Institution of Civil Engineers. London. Transactions of the Institution of Mechanical Engineers. London. Transactions of the American Society of Mechanical Engineers. Journal of the Franklin Institute. Philadelphia. Files of “American Machinist,” New York. Files of “Machinery,” New York. Files of “Engineering Magazine,” New York. Files of “Cassier’s Magazine,” New York. Files of “Engineering News,” London. Files of “Engineering,” London. Much of the data in the latter portions of this book is derived from private correspondence and personal interviews, and is, therefore, not available for reference. INDEX INDEX