61. File 2794/1921 Pt 5-5A 'OIL QATAR AND MUSCAT' Date: 1923/1933 Language: English Geographic region: MuscatQatar
62. File 2794/1921 Pt 4 'Persian Gulf: oil: Bahrein.' Date: 1925/1930 Language: English Geographic region: Bahrain
63. File 2794/1921 Pt 6 'Persian Gulf: Oil - Bahrain (1933.)' Date: 1933/1933 Language: English Geographic region: Bahrain
64. File 2794/1921 Pt 6 'Persian Gulf: Oil: Bahrain' Date: 1933/1934 Language: English Geographic region: Bahrain
65. File 2794/1921 Pt 6 'Persian Gulf: Oil: Bahrain.' Date: 1931/1933 Language: English Geographic region: Bahrain
66. File 2794/1921 'PARTS 7, 8 & 9 BAHRAIN OIL CONCESSION, WIRELESS, TELEPHONES, AND CUSTOMS DUTIES &c.' Date: 1933/1935 Language: English Geographic region: Bahrain
67. File 2794/1921 Pt 6 'Persian Gulf: Oil: Bahrain' Date: 1934/1936 Language: English Geographic region: Bahrain
68. File 2794/1921 Pt 15 'Oil. Koweit Neutral Zone. On concessions in.' Date: 1933/1935 Language: English Geographic region: KuwaitKuwait-Saudi Arabia Neutral Zone
69. File 2794/1921 Pt 3B 'Persian Gulf: oil; Kuwait' Date: 1932/1933 Language: English Geographic region: Kuwait
71. File 357/1919 Pt 2 ‘RAILWAYS IN PERSIA’ Date: 1922/1928 Language: English Geographic region: Persia
72. File 3615/1913 Pt 1 'Persian Gulf: Moin-ut-Tujjar's concessions' Date: 1913/1916 Language: English Geographic region: Bandar Abbas