1. IOR/L/PS/10/1160/1 Reference (shelfmark): IOR/L/PS/10/1160/1 Title: File 4155/1925 Pt 1 Arabia: relations with the Imam Yahya of Sanaa; British mission to the Imam under Sir G Clayton; Imam's encroachments on Aden Protectorate Collection Area: India Office Records and Private Papers Languages: English Date Range: 1925-1928 Extent: 1 file / part file