Plate XXVI from The Aeroplane Speaks by H. Barber, published by McBride, Nast & Co, London in December 1917. This copy obtained from Project Gutenberg:
Modified from Image:Plate_26.jpg Plate XXVI from ''The Aeroplane Speaks'' by H. Barber, published by McBride, Nast & Co, London in December 1917. This copy obtained from Project Gutenberg: http://www.gutenberg.org/files/21791/21791-h/images/plat