25. Coll 30/100 'Bahrain. (Persian claim to,): Geneva Arms Traffic Convention of 1925:- Reservation of the United States Senate to its ratification' Date: 1934/1935 Language: English Geographic region: Persian Gulf
26. Coll 30/186 'Oil: Koweit Territorial Waters. Jurisdiction over the sub-soil beneath the sea. Off-Shore Oil in the Persian Gulf.' Date: 1939/1948 Language: English
27. Coll 30/87(2) Part II 'Qatar: Oil Concession - P.C.L.'s Operations.' Date: 1945/1948 Language: English Geographic region: QatarBahrain
28. Coll 30/95 'Persian regulations governing visits of foreign warships to Persian ports.' Date: 1934/1947 Language: English
29. Coll 6/54 'Saudi-Arabia: Limits of Saudi Arabian territorial waters.' Date: 1932/1935 Language: English
30. File 619/1907 Pt 6 'Arms traffic:- Persian Gulf - Searching of vessels in territorial waters of Trucial Chiefs. Position of Katr [Qatar].' Date: 1910/1913 Language: English Geographic region: KatrTrucial Coast
31. File 2830/1914 Pt 2 'Persian Gulf: Pearl Fisheries. Investigation into Alleged Depletion of Pearl Banks. Germans and the Industry. Concessions, etc.' Date: 1902/1914 Language: English Geographic region: BahrainPersian Gulf
32. File 3136/1914 Pt 1 ‘German War. Situation in Turkish Arabia & Persian Gulf’ Date: 1914/1914 Language: English Geographic region: BasraBaghdadMesopotamia
33. File 13/7 'Japanese Trawlers for the Persian Gulf' Date: 1938/1938 Language: English Geographic region: Persian Gulf
34. File 4480/1923 Pt 1 ‘Persian Gulf: Ownership of the Shatt-el-Arab’ Date: 1928/1930 Language: English Geographic region: PersiaIraqShatt-el-Arab