21. IOR/R/20/G/53-101 Reference (shelfmark): IOR/R/20/G/53-101 Title: Establishment Scope & Content: Staff lists, pay and conditions of service, recruitment, training, orders and regulations, Adenisation/Arabisation. Collection Area: India Office Records and Private Papers Languages: English Date Range: 1938-1966 Extent: 49 volumes
22. IOR/R/20/B/3460-3530 Reference (shelfmark): IOR/R/20/B/3460-3530 Title: Departmental Records Collection Area: India Office Records and Private Papers Languages: English Date Range: 1917-1963 Extent: 71 files
23. IOR/R/20/B/3531-3577 Reference (shelfmark): IOR/R/20/B/3531-3577 Title: Miscellaneous Records Collection Area: India Office Records and Private Papers Languages: English Date Range: 1933-1963 Extent: 48 files
24. IOR/R/20/C/2509 Reference (shelfmark): IOR/R/20/C/2509 Title: Miscellaneous correspondence Collection Area: India Office Records and Private Papers Languages: English Date Range: Jul 1922-Dec 1922 Extent: 1 file
25. IOR/R/20/C/2526 Reference (shelfmark): IOR/R/20/C/2526 Title: Letters received Collection Area: India Office Records and Private Papers Languages: English Date Range: Nov 1938-Apr 1939 Extent: 1 file
26. IOR/R/20/C/1-1266 Reference (shelfmark): IOR/R/20/C/1-1266 Title: Protectorate Secretary's files Collection Area: India Office Records and Private Papers Languages: English Date Range: 1922-1967 Extent: 1268 files
27. IOR/R/20/A/4520-4942 Reference (shelfmark): IOR/R/20/A/4520-4942 Title: Protectorate and Foreign Affairs Collection Area: India Office Records and Private Papers Languages: English Date Range: 1878-1938 Extent: 426 files
28. IOR/R/20/C/2508 Reference (shelfmark): IOR/R/20/C/2508 Title: Correspondence on supplies Collection Area: India Office Records and Private Papers Languages: English Date Range: Oct 1919-Dec 1920 Extent: 1 file
29. IOR/R/20/C/2531 Reference (shelfmark): IOR/R/20/C/2531 Title: Intelligence Summaries: Hodeida Collection Area: India Office Records and Private Papers Languages: English Date Range: Oct 1941-Dec 1942 Extent: 1 file
30. IOR/R/20/C/2532 Reference (shelfmark): IOR/R/20/C/2532 Title: Intelligence Summaries: Hodeida Collection Area: India Office Records and Private Papers Languages: English Date Range: Sep 1941-Apr 1943 Extent: 1 file