NPG 1894; Sir John William Alcock by Ambrose McEvoy Published on December 17, 2013 in Captain Sir John William Alcock, K.B.E., D.S.C. (5 November 1892 – 18 December 1919)Full resolution (535 × 800) Next → Sir John William Alcock, by Ambrose McEvoy, 1919. NPG 1894 © National Portrait Gallery, Londonby Ambrose McEvoy, oil on canvas, 1919