25. PZ 2729/37 'Pastori, an Italian subject: Activities in the Persian Gulf' Date: 1937/1938 Language: English
26. Coll 28/104 ‘Persia. Hormuz. Salt. Hormuz Red Oxide’ Date: 1941/1947 Language: English Geographic region: Hormuz
27. Coll 6/11 'Hejaz-Nejd Affairs: Economic Development in the Hejaz' Creator: Author: Karl Saben Twitchell Date: 1929/1937 Language: English Geographic region: Kingdom of Nejd and HejazSaudi Arabia
28. Coll 28/16 ‘Persia; Imperial Bank of Persia; relations with the Persian Government.’ Date: 1931/1935 Language: English Geographic region: Persia
29. Coll 28/72 ‘Persia. Telegraph stations at Jask; Question of Persian encroachments and realignment of boundary.’ Date: 1932/1935 Language: English Geographic region: Jask
30. Coll 28/85 ‘Persia. Relations with H.M.G. Anglo-Persian Oil Company.’ Date: 1934/1947 Language: English Geographic region: Persia
31. Coll 6/34 'Yemen: Oil and Mining Concessions in. Messrs Mitchell and Boucher. Activities of Mr E.R. Bailey. Petroleum Concessions Ltd: Survey of Kamaran.' Date: 1932/1937 Language: English Geographic region: YemenHodeida
32. Coll 28/4 ‘Persia Imperial Bank of; Charter &c. Liability to Persian Stamp Duty’ Date: 1903/1945 Language: English Geographic region: Persia
33. Coll 28/55 ‘Persia. Anglo-Persian Oil Company. Relations with Persian Govt.’ Date: 1932/1933 Language: English
34. Coll 6/67(4) 'Boundaries of South Eastern Arabia and Qatar.' Creator: Author: Committee of Imperial Defence, Standing Official Sub-Committee for Questions Concerning the Middle East Date: 1935/1937 Language: English Geographic region: Jebel NakshKhor-al-OdeidArabian Peninsula
35. Coll 6/67(5) 'Boundaries of South Eastern Arabia and Qatar (Khor al Odeid)' Creator: Author: Committee of Imperial Defence, Standing Official Sub-Committee for Questions Concerning the Middle East Date: 1937/1939 Language: English Geographic region: Qasr-es-SalwaJebel Naksh
36. Coll 6/67(6) 'Boundaries of South-Eastern Arabia and Qatar: Trucial Coast Oil Concessions' Date: 1940/1948 Language: English Geographic region: Jebel NakshKhor-el-OdeidSaudi Arabia