31. IOR/R/20/C/2535 Reference (shelfmark): IOR/R/20/C/2535 Title: Intelligence Summaries: Aden and EAP Collection Area: India Office Records and Private Papers Languages: English Date Range: Oct 1941-Aug 1943 Extent: 1 file
32. IOR/R/20/C/2083-2113 Reference (shelfmark): IOR/R/20/C/2083-2113 Title: Secret political files Collection Area: India Office Records and Private Papers Languages: English Date Range: 1952-1963 Extent: 30 files
33. IOR/R/20/C/2138-2191 Reference (shelfmark): IOR/R/20/C/2138-2191 Title: Secret administration files Collection Area: India Office Records and Private Papers Languages: English Date Range: 1954-1963 Extent: 54 files
34. IOR/R/20/C/2192-2196 Reference (shelfmark): IOR/R/20/C/2192-2196 Title: Secret Establishment files Collection Area: India Office Records and Private Papers Languages: English Date Range: 1959-1965 Extent: 5 files
35. IOR/R/20/C/2234-2243 Reference (shelfmark): IOR/R/20/C/2234-2243 Title: WAP District handbooks Collection Area: India Office Records and Private Papers Languages: English Date Range: c 1955-1965 Extent: 10 files
36. IOR/R/20/C/2456-2461 Reference (shelfmark): IOR/R/20/C/2456-2461 Title: Ja'ar Collection Area: India Office Records and Private Papers Languages: English Date Range: 1965-1966 Extent: 6 files
37. IOR/R/20/C/2462-2482 Reference (shelfmark): IOR/R/20/C/2462-2482 Title: Maifa'ah Collection Area: India Office Records and Private Papers Languages: English Date Range: 1952-1966 Extent: 21 files
38. IOR/R/20/C/1753-1933 Reference (shelfmark): IOR/R/20/C/1753-1933 Title: Secret files Collection Area: India Office Records and Private Papers Languages: English Date Range: 1937-1966 Extent: 181 files
39. IOR/R/20/C/2040-2049 Reference (shelfmark): IOR/R/20/C/2040-2049 Title: Ordinary files Collection Area: India Office Records and Private Papers Languages: English Date Range: 1940-1948 Extent: 10 files
40. IOR/R/20/C/2483 (Sub-sub-series) Reference (shelfmark): IOR/R/20/C/2483 (Sub-sub-series) Title: Thumair Collection Area: India Office Records and Private Papers Languages: English Date Range: 1964-1965 Extent: 1 file