Northcott, W. Henry: On Lathes and Turning, 1868. A.L.O. No.211 -- Robinson, H.B.: Eccentric Spiral Turning, 1906. A.L.O. No.244 -- Ash, Capt.J.: The Art of Double Counting on the Lathe, 1857. A.L.O. No.14 -- Bazley, Sir T.S.MA: Notes on the Epicycloidal Cutting Frame, 1872. A.L.O. No.23 -- Engleheart, N.B.: Eccentric Turning, 1867