Copies of articles published by William Ellis Williams (1881-1962) formerly independent lecturer and then Professor of Electronic Engineering at U.C.N.W. viz: "The Centre of Gravity" (Aeronautics, December 1909); "The Stresses on Aeroplane Framework" (Aeronautics, July 1911); "A New Method for the Measurement of Air Resistance on Planes and Curved Surfaces" (Aeronautics, November 1911); "The Pressure Distribution on an Aeroplane Wing in Flight" (The Aeronautical Journal, October 1914) See also BMSS/20801-20810 1909-1914