1768696 Aerial photograph with WWI trenches, 1918 (b/w photo) by English Photographer, (20th century); The Royal Institution, London, UK; (add.info.: Aerial photograph from an album belonging to Nobel Prize-winning physicist William Lawrence Bragg (31 March 1890 ??1 July 1971) showing an area to the north west side of the village of Bellicourt, 5 March 1918. The lines of trenches and tracks can be picked out as well as bomb craters. The photograph has been marked with an arrow pointing north and a small white cross, possibly related to sound ranging.); 穢 Royal Institution ; English, out of copyright.