1. IOR/L/PS/6/519, Coll 42 Reference (shelfmark): IOR/L/PS/6/519, Coll 42 Title: Papers relating to the Southern Philippines - discussions of the British and Dutch Governments regarding a proposed joint naval expedition against the pirates of the Sulu [Xolo] Islands - question of the Spanish claim to sovereignty over the islands Collection Area: India Office Records and Private Papers Languages: English Date Range: Apr 1862 Extent: 1 file