1. IOR/L/MIL/7/13639 Reference (shelfmark): IOR/L/MIL/7/13639 Title: Collection 309/15 Movable armament of Aden defences: addition of 25-pounder muzzle-loading guns, withdrawal of smooth-bore armament. Collection Area: India Office Records and Private Papers Languages: English Date Range: 1890-1892 Extent: 1 file