21. IOR/R/20/A/1206 Reference (shelfmark): IOR/R/20/A/1206 Title: File C/39 Demarcation of Aden frontier Miscellaneous correspondence Collection Area: India Office Records and Private Papers Languages: English Date Range: 1873-1904 Extent: 1 file
22. IOR/R/20/A/1220 Reference (shelfmark): IOR/R/20/A/1220 Title: File C/53 Yemen: revolt against the Turks Collection Area: India Office Records and Private Papers Languages: English Date Range: 1905 Extent: 1 file
23. IOR/R/20/A/1209 Reference (shelfmark): IOR/R/20/A/1209 Title: File C/42 Political miscellaneous correspondence relating to the Protectorate Collection Area: India Office Records and Private Papers Languages: English Date Range: 1901-1903 Extent: 1 file
24. IOR/R/20/A/1188 Reference (shelfmark): IOR/R/20/A/1188 Title: File C/20 Political (Yemen and Hodeida) Collection Area: India Office Records and Private Papers Languages: English Date Range: 1898-1901 Extent: 1 file
25. IOR/R/20/A/1194 Reference (shelfmark): IOR/R/20/A/1194 Title: File C/26 Illicit arms trade Collection Area: India Office Records and Private Papers Languages: English Date Range: 1902 Extent: 1 file
26. IOR/R/20/A/1195 Reference (shelfmark): IOR/R/20/A/1195 Title: File C/27 Illicit arms trade Collection Area: India Office Records and Private Papers Languages: English Date Range: 1902 Extent: 1 file
27. IOR/R/20/A/1196 Reference (shelfmark): IOR/R/20/A/1196 Title: File C/28 Pt I Demarcation of Aden frontier Collection Area: India Office Records and Private Papers Languages: English Date Range: Oct 1901-Feb 1902 Extent: 1 file
28. IOR/R/20/A/1197 Reference (shelfmark): IOR/R/20/A/1197 Title: File C/29 Pt II Demarcation of Aden frontier Collection Area: India Office Records and Private Papers Languages: English Date Range: Nov 1902-Jan 1903 Extent: 1 file
29. IOR/R/20/A/1198 Reference (shelfmark): IOR/R/20/A/1198 Title: File C/31 Pt IV Demarcation of Aden frontier Collection Area: India Office Records and Private Papers Languages: English Date Range: Nov 1902-Jan 1903 Extent: 1 file
30. IOR/R/20/A/1199 Reference (shelfmark): IOR/R/20/A/1199 Title: File C/32 Pt V Demarcation of Aden frontier Collection Area: India Office Records and Private Papers Languages: English Date Range: Nov 1902-Aug 1903 Extent: 1 file