FISKE, BRADLEY A. _Invention, the master-key to progress._ New York: E. P. Dutton and Company, 1921. GIFFORD, GEORGE W. [Counsel for Elias Howe, Jr.] _Argument of Gifford in favor of Howe's application for extension of patent._ Washington: U.S. Patent Office, 1860. GRANGER, JEAN. Thimonnier et la machine à coudre. In vol. 2 of _Les publications techniques._ Paris, 1943. [Source for biographical sketch on Barthelemy Thimonnier.] GREGORY, GEORGE W. _Machines, etc., used in sewing and making clothing._ Vol. 7 of _Reports and Awards_. Philadelphia International Exhibition, 1876. U.S. Centennial Commission, Washington, D.C., 1880. HERSBERG, RUDOLPH. _The sewing machine, its history, construction and application._ Transl. Upfield Green. London: E. & F. N. Spon, 1864. HOWE, HENRY. _Adventures and achievements of Americans._ Published by the author, 1860. HOWE MACHINE COMPANY. _The Howe exhibition catalog of sewing machines._ Published by the company for the Philadelphia Centennial Exposition, 1876. HUBERT, PHILIP G., JR. _Men of achievement: inventors._ New York: Charles Scribner's Sons, 1894. HUNT, CLINTON N. _Walter Hunt, American inventor._ Published by the author, 1935. [Source for biographical sketch on Walter Hunt.] INTERNATIONAL EXHIBITION. Sewing and knitting machines. In _Reports of the Juries_, Class VII, Section A. London, 1862. JOHNSON CLARK AND COMPANY. _Sewing machines for domestic and export trade._ Published by the company, 1883. KAEMPFFERT, WALDEMAR. A popular history of American invention. _Making clothes by machine_, by John Walker Harrington, vol 2. New York: Charles Scribner's Sons, 1924. KILGARE, C. B. _Sewing-machines._ Philadelphia: J. B. Lippincott Company, 1892. KNIGHT, EDWARD H. Vol. 3 of _Knight's American mechanical dictionary_. Boston: Houghton, Mifflin and Company, 1882. LEWTON, FREDERICK L. The servant in the house: a brief history of the sewing machine. Pp. 559-583 in Annual Report of the Smithsonian Institution (1929); Washington: 1930. LUTH, ERICH. _Ein Mayener Strumpfwirker, Balthasar Krems, 1760-1813, Erfinder der Nähmaschine._ Hamburg, Germany: Verlag Herbert Luth, 1941. ----. _Josef Madersperger oder der unscheinbore Genius._ Hamburg, Germany: Reichsnerband des Deutschen Nähmaschinenhandels EV, 1933 [?]. Obituary of Isaac M. Singer. _New York Tribune_, July 26, 1875. MADERSPERGER, JOSEPH. _Beschreibung einer Nähmaschine._ Vienna, ca. 1816. O'BRIEN, WALTER. Sewing machines. _Textile American_, reprinted March 1931. [A paper read at a meeting of the Leicester Textile Society.] ORCUTT, REV. SAMUEL. _A history of the old town of Stratford and the city of Bridgeport, Connecticut._ 2 vols. Fairfield County Historical Society, 1886.