401. IOR/R/20/C/1873 Reference (shelfmark): IOR/R/20/C/1873 Title: File R/250 II Habarut Operation Collection Area: India Office Records and Private Papers Languages: English Date Range: Dec 1956-Jun 1960 Extent: 1 file
402. IOR/R/20/C/1874 Reference (shelfmark): IOR/R/20/C/1874 Title: File R/250 III Habarut Operation Collection Area: India Office Records and Private Papers Languages: English Date Range: May 1960-Mar 1967 Extent: 1 file
403. IOR/R/20/C/1882 Reference (shelfmark): IOR/R/20/C/1882 Title: File R/263 Thamud tribal situation Collection Area: India Office Records and Private Papers Languages: English Date Range: Oct 1955-Aug 1965 Extent: 1 file
404. IOR/R/20/C/1897 Reference (shelfmark): IOR/R/20/C/1897 Title: File R/300 Wahidi postal service Collection Area: India Office Records and Private Papers Languages: English Date Range: Sep 1956-Oct 1959 Extent: 1 file
405. IOR/R/20/C/1941 Reference (shelfmark): IOR/R/20/C/1941 Title: File TSR/85 Intelligence: Yemeni intelligence Collection Area: India Office Records and Private Papers Languages: English Date Range: Oct 1960-Aug 1964 Extent: 1 file
406. IOR/R/20/C/1944 Reference (shelfmark): IOR/R/20/C/1944 Title: File TSR/220/IV Intelligence: general Collection Area: India Office Records and Private Papers Languages: English Date Range: Jul 1963-Dec 1966 Extent: 1 file
407. IOR/R/20/C/1946 Reference (shelfmark): IOR/R/20/C/1946 Title: File TSR/344 Security: British families Collection Area: India Office Records and Private Papers Languages: English Date Range: Dec 1961-Nov 1965 Extent: 1 file
408. IOR/R/20/C/1947 Reference (shelfmark): IOR/R/20/C/1947 Title: File TSR/403 Miscellaneous development resources Collection Area: India Office Records and Private Papers Languages: English Date Range: Jul 1950-Apr 1965 Extent: 1 file
409. IOR/R/20/C/2039 (Sub-sub-sub-series) Reference (shelfmark): IOR/R/20/C/2039 (Sub-sub-sub-series) Title: Arabic documents Collection Area: India Office Records and Private Papers Languages: English Date Range: Unspecified Extent: 1 file
410. IOR/R/20/C/2233 Reference (shelfmark): IOR/R/20/C/2233 Title: Yafa'i: policy and notes Collection Area: India Office Records and Private Papers Languages: English Date Range: Unspecified Extent: 1 file