61. IOR/R/20/A/1-1059 Reference (shelfmark): IOR/R/20/A/1-1059 Title: General Compilation volumes Collection Area: India Office Records and Private Papers Languages: English Date Range: 1838-1905 Extent: 1058 volumes
62. IOR/R/20/A/1171-1221 Reference (shelfmark): IOR/R/20/A/1171-1221 Title: Confidential Branch files Collection Area: India Office Records and Private Papers Languages: English Date Range: 1887-1905 Extent: 51 files
63. IOR/R/20/A/1571-2922 Reference (shelfmark): IOR/R/20/A/1571-2922 Title: General subject files Collection Area: India Office Records and Private Papers Languages: English Date Range: 1906-1939 Extent: 1358 files
64. IOR/R/20/A/4109-4308 Reference (shelfmark): IOR/R/20/A/4109-4308 Title: Kamaran Administration files Collection Area: India Office Records and Private Papers Languages: English Date Range: 1917-1940 Extent: 200 files
65. IOR/R/20/A/4405-4507 Reference (shelfmark): IOR/R/20/A/4405-4507 Title: Trade Registration Office Collection Area: India Office Records and Private Papers Languages: English Date Range: 1905-1955 Extent: 103 volumes
66. IOR/R/20/A/4517-4519 Reference (shelfmark): IOR/R/20/A/4517-4519 Title: Aden Port Trust Collection Area: India Office Records and Private Papers Languages: English Date Range: 1908-1951 Extent: 3 files
67. IOR/R/20/C/2543 Reference (shelfmark): IOR/R/20/C/2543 Title: Operations reports Collection Area: India Office Records and Private Papers Languages: English Date Range: 1941-1948 Extent: 1 file
68. IOR/R/20/C/2064-2243 Reference (shelfmark): IOR/R/20/C/2064-2243 Title: Western Aden Protectorate: Adviser and British Agent Collection Area: India Office Records and Private Papers Languages: English Date Range: 1940-1965 Extent: 183 files
69. IOR/R/20/C/2426-2506 Reference (shelfmark): IOR/R/20/C/2426-2506 Title: WAP: District Area files of Assistant Advisers Collection Area: India Office Records and Private Papers Languages: English Date Range: 1948-1966 Extent: 81 files
70. IOR/R/20/C/2040-2059 Reference (shelfmark): IOR/R/20/C/2040-2059 Title: Eastern Aden Protectorate: Assistant Adviser, Northern Areas, Sai'un Collection Area: India Office Records and Private Papers Languages: English Date Range: 1940-1965 Extent: 24 files