25. 'Book 130' Letters inward Date: 1840/1841 Language: English Geographic region: Trucial CoastEl Biddah
26. ‘Book 131’ Secret letters inward Date: 1840/1841 Language: English Geographic region: Trucial CoastZanzibarKarrack (island)Nos Beh (island)
27. 'Book 141 1844-1849' secret letters inward Date: 1843/1848 Language: English Geographic region: Eastern Africa
29. ‘Book 153 1847’ Vol 153 Letters inward Date: 1847/1847 Language: English Geographic region: Eastern Africa
30. ‘Book 155 1848’ Vol 155 Letters inward Creator: Author: Secretary of State for Foreign AffairsAuthor: Lords Commissioners of the Treasury Date: 1848/1848 Language: English Geographic region: Eastern Africa
31. ‘Book 161 1847’ Vol 161 Letters inward Date: 1847/1847 Language: English Geographic region: AdenEastern Africa
32. 'British interests on the coast of Arabia, Koweit, Bahrein and El Katr' Creator: Author: India Office, Secretary to the Political and Secret DepartmentAuthor: HM Ambassador to the Ottoman Empire Date: 1905/1905 Language: English Geographic region: BahrainKoweitBahrein
33. 'Egyptian Claims to Sovereignty over the Somali Coast.' Date: 1876/1879 Language: English Geographic region: BerberaAden
34. 'Treaties and Agreements between the British Government and Certain Arab Rulers and Agreements between the Said Rulers inter se Affecting the British Government' Date: 1926/1926 Language: English Geographic region: نجدالكويتقطرالجفيرالزلاقرأس تنورهكوهماندزلاق
35. 'File 35/86 I A 32 Muscat Commercial Treaty, 1891: revision of 1905' Date: 1905/1922 Language: English
36. 'File 35/86 II A 45 Muscat - Commercial Treaty of 1891 and revision of treaty 1922' Date: 1922/1931 Language: English