49. ‘Book 131’ Secret letters inward Date: 1840/1841 Language: English Geographic region: Trucial CoastZanzibarKarrack (island)Nos Beh (island)
50. 'Book 133' Secret letters inward Date: 1841/1842 Language: English Geographic region: Trucial CoastKarrack (island)Eastern Africa
51. 'Book 140 1843' letters inward Date: 1843/1843 Language: English Geographic region: Trucial Coast
52. 'Book 141 1844-1849' secret letters inward Date: 1843/1848 Language: English Geographic region: Eastern Africa
55. ‘Book 153 1847’ Vol 153 Letters inward Date: 1847/1847 Language: English Geographic region: Eastern Africa
56. ‘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
57. ‘Book 158 1847-8’ Vol 158 Letters inward Date: 1847/1848 Language: English Geographic region: Trucial CoastEastern Africa
58. ‘Book 161 1847’ Vol 161 Letters inward Date: 1847/1847 Language: English Geographic region: AdenEastern Africa
59. ‘Vol 204 1855/56 Slave Trade; Bahrain, Arabian Coast and Muscat; Accounts and General’ Date: 1855/1856 Language: English
60. 'Vol 255 Slave Trade' Date: 1857/1861 Language: English Geographic region: BahreinBassidoreShargahZanzibar