1. IOR/L/MIL/7/12445 Reference (shelfmark): IOR/L/MIL/7/12445 Title: Collection 269/189 Appointment of cryptographer at Army Headquarters, India: Mr G.L. Clauson, Lieutenant Colonel W.H. Jeffrey, Mr N.B. Jopson. Collection Area: India Office Records and Private Papers Languages: English Date Range: 1920-1921 Extent: 1 file