1. IOR/L/MIL/17/12/10 Reference (shelfmark): IOR/L/MIL/17/12/10 Title: Draft defence scheme for the port of Calcutta 1934 (revised March 1936). Calcutta: HQ Presidency & Assam District, 1936. Scope & Content: Maps; Secret Collection Area: India Office Records and Private Papers Languages: English Date Range: 1936 Extent: iv, 57p, 33cm