1. IOR/L/PS/20/G87 Reference (shelfmark): IOR/L/PS/20/G87 Title: Notes on aerial photography. Part II. The interpretation of aeroplane photographs in Mesopotamia Baghdad: Royal Air Force, GHQ, Mesopotamia, 1918 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1918 Extent: vii, 97pp plates