11. IOR/R/20/A/4072 Reference (shelfmark): IOR/R/20/A/4072 Title: File 15/1/II World War I: Aden News Letters Collection Area: India Office Records and Private Papers Languages: English Date Range: Jan 1921-Mar 1927 Extent: 1 file
12. IOR/R/20/A/4074 Reference (shelfmark): IOR/R/20/A/4074 Title: File 20/1 World War I: Red Sea Trade Policy Collection Area: India Office Records and Private Papers Languages: English Date Range: Apr 1917-May 1918 Extent: 1 file
13. IOR/R/20/A/4077 Reference (shelfmark): IOR/R/20/A/4077 Title: File 25/1 World War I: Red Sea Trade Policy Collection Area: India Office Records and Private Papers Languages: English Date Range: May 1915-May 1917 Extent: 1 file
14. IOR/R/20/A/4079 Reference (shelfmark): IOR/R/20/A/4079 Title: File 25/3 World War I: Saudi Arabia: trade policy Collection Area: India Office Records and Private Papers Languages: English Date Range: Sep 1915-Apr 1919 Extent: 1 file
15. IOR/R/20/A/4081 Reference (shelfmark): IOR/R/20/A/4081 Title: File 25/5 World War I: Red Sea Trade: policy Collection Area: India Office Records and Private Papers Languages: English Date Range: Apr 1917-Jan 1918 Extent: 1 file
16. IOR/R/20/A/4084 Reference (shelfmark): IOR/R/20/A/4084 Title: File 33/9 World War I: Trading with enemy: miscellaneous Collection Area: India Office Records and Private Papers Languages: English Date Range: Oct 1914-Sep 1918 Extent: 1 file
17. IOR/R/20/A/4085 Reference (shelfmark): IOR/R/20/A/4085 Title: File 36/3 World War I: Foreigners and Suspicious persons Collection Area: India Office Records and Private Papers Languages: English Date Range: Jun 1916-Jan 1921 Extent: 1 file
18. IOR/R/20/A/4086 Reference (shelfmark): IOR/R/20/A/4086 Title: File 38/2 World War I: Sheikh Othman: Prisoners and spies Collection Area: India Office Records and Private Papers Languages: English Date Range: Jul 1915-Jun 1918 Extent: 1 file
19. IOR/R/20/A/4090 Reference (shelfmark): IOR/R/20/A/4090 Title: File 51/3 World War I: Wahidi Affairs (Aden Protectorate) Collection Area: India Office Records and Private Papers Languages: English Date Range: Sep 1907-May 1927 Extent: 1 file
20. IOR/R/20/A/4092 Reference (shelfmark): IOR/R/20/A/4092 Title: File 52/2 World War I: Idrisi: arms and ammunition Collection Area: India Office Records and Private Papers Languages: English Date Range: Mar 1918-Feb 1921 Extent: 1 file