Jones, R. V. (1978) Most Secret War: British Scientific Intelligence 1939-1945, London: Hamish Hamilton, pp. p?
Author
British Sortie N/853[2] by Flight Lieutenant R. A. Lenton and Sergeant R. S. Haney[3] took this photograph of Peenemünde, which shows 'a thick vertical column about 40 feet high' southeast of the 'buttresses': Flight Lieutenant Andre' J. A. Kenny's Industrial Section[4] enlarges the photos and initially fails to identify the rocket. Over a year later on August 4, 1944, Dr. R. V. Jones obtained a private set of the June 12, 1943 Peenemünde photos from the Medmenham commander, Group Captain P. G. Stewart, the 'thick vertical columns' were measured again and confirmed as vertical rockets, and Jones identified the rocket image to Duncan Sandys.[4][5][6]