5929849 Royal Flying Corps pilot officer, 1917 circa (b/w photo) by Unknown photographer, (20th century); National Army Museum, London; (add.info.: Royal Flying Corps pilot officer, 1917 circa. Photograph, World War One, Air Operations (1914-1918), 1917 circa. The open cockpits of aircraft during the First World War made leather coats, helmets and gauntlets, along with sweaters, fur-lined boots, goggles and face masks, indispensable. From an album of photographs relating to Lieutenant William Charles Carter who served in 28th Bn London Regiment (Artists Rifles), and 13 Squadron Royal Flying Corps during World War One.); by National Army Museum ; out of copyright.