FOOTNOTES:
[1] John Muir (1838-1914), The story of my boyhood and youth, Boston, 1913, pp. 227, 228.
[2] R. L. Ardrey, American agricultural implements, Chicago, 1894, p. 14.
[3] Ibid., p. 16.
[4] J. B. Davidson, "Tillage machinery," in L. H. Bailey's Cyclopedia of American agriculture, New York, 1907, vol. 1, p. 389.
[5] Leo Rogin, The introduction of farm machinery in its relation to the productivity of labor in the agriculture of the United States during the nineteenth century, Berkeley, 1931, p. 33.
[6] U. S. National Museum records under accession 148904.
[7] Neil M. Clark, John Deere, Moline, 1937, pp. 34, 35.
[8] Stewart H. Holbrook, Machines of plenty, New York, 1955, pp. 178, 179. To an inquiry by this author, Mr. Holbrook replied that most if not all of the material about Andrus came from the files of the J. I. Case Company.
[9] Photographic copies of partnership agreements between Andrus, Deere, and others are in U. S. National Museum records under accession 148904.
[10] Ibid.
[11] Ibid.
[12] Letter from Burton F. Peek to M. L. Putnam, December 18, 1957, in U. S. National Museum records under accession 148904.
[13] Clark, op. cit. (footnote 7), p. 34.
[14] E. H. Knight, American mechanical dictionary, Boston, 1884, vol. 3, p. 2033.
[15] Henry Disston & Sons, Price list, Philadelphia, 1897, p. 28.
[16] Ardrey, op. cit. (footnote 2), p. 166.
[17] Ibid., p. 166.
[18] James M. Swank, History of the manufacture of iron in all ages..., Philadelphia, 1892, pp. 390, 393.
[19] Country Gentleman, 1857, vol. 10, p. 129.
[20] Reports on spark test by E. A. Battison, U. S. National Museum, and on metallurgical investigation by A. H. Valentine, Metallographic Laboratory of the Bethlehem Steel Company's Sparrows Point Plant.
[21] For this information I am indebted to Mr. E. A. Battison of the U. S. National Museum staff.
[22] Abraham Rees, The cyclopaedia; or universal dictionary of arts, sciences, and literature, Philadelphia, 1810-1842, vol. 33, under saw.