1. IOR/R/20/C/597 Reference (shelfmark): IOR/R/20/C/597 Title: File 191/39 Pt II Ord. Protest by the King of the Yemen about the landing and flying of British aeroplanes at An Nabia, etc Collection Area: India Office Records and Private Papers Languages: English Date Range: Feb 1940-Apr 1940 Extent: 1 file