13. Ext 6566/45 'Appt. of Lieut. Commander Clifton E. Perry, U.S. Naval Reserve, assigned U.S. Naval Observer at American Consulate, Aden.' Date: 1945/1945 Language: English Geographic region: Aden Protectorate
14. Title deed plan of land at Umm al Hasam, Manamah Date: 1944/1944 Language: Arabic Geographic region: JufairJazīreh-ye Hengām
15. Title deed plan of land at Ghosaibia, Manamah Date: 1944/1944 Language: Arabic Geographic region: JufairJazīreh-ye Hengām
17. Coll 30/191 ‘Persian Gulf. Defence of the Persian Gulf. Establishment of aircraft facilities at Socotra and Salalah (Muscat) and Assembly Port at Masira Bay.’ Date: 1939/1946 Language: English Geographic region: SalalahJiddah IslandMasirah
18. Coll 30/59 'Persian Gulf. Creation of Persian Navy, etc' Date: 1929/1936 Language: English Geographic region: Persia
19. File 13/7 'Japanese Trawlers for the Persian Gulf' Date: 1938/1938 Language: English Geographic region: Persian Gulf