51. IOR/R/20/C/2543-2546 Reference (shelfmark): IOR/R/20/C/2543-2546 Title: Headquarters British Forces Aden: Secret Operations Reports Collection Area: India Office Records and Private Papers Languages: English Date Range: 1941-1949 Extent: 4 files
52. IOR/R/20/G/228-258 Reference (shelfmark): IOR/R/20/G/228-258 Title: Miscellaneous official publications relating to India, Somali Coast and Palestine Collection Area: India Office Records and Private Papers Languages: English Date Range: 1860-1938 Extent: 31 volumes
53. IOR/R/20/C/2507 Reference (shelfmark): IOR/R/20/C/2507 Title: Miscellaneous correspondence and memos Collection Area: India Office Records and Private Papers Languages: English Date Range: Sep 1919-Mar 1920 Extent: 1 file
54. IOR/R/20/C/2520 Reference (shelfmark): IOR/R/20/C/2520 Title: Vol 2 Letters received Collection Area: India Office Records and Private Papers Languages: English Date Range: Sep 1930-Dec 1931 Extent: 1 file
55. IOR/R/20/C/2521 Reference (shelfmark): IOR/R/20/C/2521 Title: Vol 3 Letters received Collection Area: India Office Records and Private Papers Languages: English Date Range: Jan 1932-Dec 1933 Extent: 1 file
56. IOR/R/20/C/2522 Reference (shelfmark): IOR/R/20/C/2522 Title: Vol 4 Letters received Collection Area: India Office Records and Private Papers Languages: English Date Range: Jan 1934-Dec 1935 Extent: 1 file
57. IOR/R/20/C/2523 Reference (shelfmark): IOR/R/20/C/2523 Title: Vol 5 Letters received Collection Area: India Office Records and Private Papers Languages: English Date Range: Jan 1936-Dec 1937 Extent: 1 file
58. IOR/R/20/C/2525 Reference (shelfmark): IOR/R/20/C/2525 Title: Vol 7 Letters received Collection Area: India Office Records and Private Papers Languages: English Date Range: Jan 1938-Jan 1939 Extent: 1 file
59. IOR/R/20/C/2538 Reference (shelfmark): IOR/R/20/C/2538 Title: Miscellaneous enquiries and reports Collection Area: India Office Records and Private Papers Languages: English Date Range: Dec 1940-Apr 1943 Extent: 1 file
60. IOR/R/20/E/20 Reference (shelfmark): IOR/R/20/E/20 Title: Aden fortifications Collection Area: India Office Records and Private Papers Languages: English Date Range: 1842-1843 Extent: 1 volume