- Gifallen , S. Colum . 1935 . The Sociology of Invention 24 – 25 . Chicago
- Dickinson , Henry W. 1938 . A Short History of the Steam Engine 83 – 83 . Cambridge
- Thurston , Robert Henry . 1886 . A History of the Growth of the Steam Engine 115 – 115 . New York This diagram is based on Figure 29 in Thurston's book.
- Thurston , Robert Henry . 1886 . A History of the Growth of the Steam Engine 114 – 115 . New York
- Dickinson . 137 – 137 .
- 1910 . Charles Talbot Porter Dead at 84 . Power and the Engineer , 32 : 1615 – 1617 . (anon. obit.)
- Porter , Charles Talbot . 1908 . Engineering Reminiscences 1 – 1 . New York hereafter cited as Rem
- Porter , Charles Talbot . 1887 . Mechanics and Faith 44 – 45 . New York
- Rem. , 3 – 3 .
- Rem. , 3 – 3 .
- Rem. , 13 – 13 .
- Rem. , 17 – 17 .
- Haswell , Charles H. 1847 . Engineer's and Mechanics' Pocketbook , 4th ed. New York
- Haswell , Charles H. 1847 . Engineer's and Mechanics' Pocketbook , 4th ed. 190 – 190 . New York This rule actually does work. If we let m be the mass, W be the weight, g be the acceleration of gravity, r be the radius, and d be the diameter, then starting from the usual formula, the centrifugal force equals mv2/r. From this we obtain (w/g)·(v2/r) = w·v2/((g/2)·2r) = w·v2/((g/2)·) = w·[v/√(g/2)]2·(1/d). If we let w = 1 and g ⋍ 32 ft./sec.2, this last expression becomes (v/4.01)2/d, which is Haswell's rule.
- Haswell , Charles H. 1847 . Engineer's and Mechanics' Pocketbook , 4th ed. 192 – 192 . New York
- Rem. , 19 – 19 .
- Rem. , 20 – 22 .
- Porter's Improved Governor . Scientific American , 14 36 – 36 .
- 1893 . Leading American Engineers: Charles T. Porter . Cassier's Magazine , 3 : 261 – 262 .
- Yost , Edna . Allen, John F. . Dictionary of American Biography , i 199 – 199 .
- Thurston , R.H. History , 314 – 314 .
- Rem. , 45 – 49 .
- Porter , Charles T. 1868 . On the Allen Engine and Governor . Proc. Inst. Mech. Engi. , : 63 – 64 .
- Thurston , Robert Henry . 1891 . A Manual of the Steam Engine Vol. ii , 374 – 381 . New York
- Durand , William F. 1929 . Robert Henry Thuston 11 – 21 . New York
- Durand , William F. 1929 . Robert Henry Thuston 27 – 43 . New York
- Durand , William F. 1929 . Robert Henry Thuston 47 – 50 . New York
- Durand , William F. 1929 . Robert Henry Thuston 68 – 69 . New York
- Durand , William F. 1929 . Robert Henry Thuston 95 – 96 . New York
- Durand , William F. 1929 . Robert Henry Thuston 192 – 192 . New York
- Porter . Mechanics and Faith 6 – 6 .
- Porter . Mechanics and Faith , 7 – 7 .
- Porter . Mechanics and Faith 120 – 120 .
- Porter . Mechanics and Faith 22 – 22 .
- Porter . Mechanics and Faith 33 – 33 .
- Finch , James Kip . 1961 . Engineering and Science: A Historical Review and Appriasal . Technology and Culture , 2 : 319 – 319 .
- Finch , James Kip . 1961 . Engineering and Science: A Historical Review and Appriasal . Technology and Culture , 2 : 326 – 326 .
- Finch , James Kip . 1961 . Engineering and Science: A Historical Review and Appriasal . Technology and Culture , 2 : 327 – 327 .
- Finch , James Kip . 1961 . Engineering and Science: A Historical Review and Appriasal . Technology and Culture , 2 : 23 – 23 .
Annals of Science
Volume 29, 1972 - Issue 3