21. IOR/Z/L/PS/9/21 Reference (shelfmark): IOR/Z/L/PS/9/21 Title: Registers of Letters from and Despatches to Aden and Persian Gulf, with Indexes Collection Area: India Office Records and Private Papers Languages: English Date Range: 1894 Extent: 1 volume
22. IOR/Z/L/PS/9/22 Reference (shelfmark): IOR/Z/L/PS/9/22 Title: Registers of Letters from and Despatches to Aden and Persian Gulf, with Indexes Collection Area: India Office Records and Private Papers Languages: English Date Range: 1895 Extent: 1 volume
23. IOR/Z/L/PS/9/23 Reference (shelfmark): IOR/Z/L/PS/9/23 Title: Registers of Letters from and Despatches to Aden and Persian Gulf, with Indexes Collection Area: India Office Records and Private Papers Languages: English Date Range: 1896 Extent: 1 volume