21. IOR/Z/L/PS/9/9 Reference (shelfmark): IOR/Z/L/PS/9/9 Title: Register of Letters from and Despatches to Aden, Persian Gulf and Zanzibar, with Indexes Collection Area: India Office Records and Private Papers Languages: English Date Range: 1880 Extent: 1 volume
22. IOR/Z/L/PS/9/10 Reference (shelfmark): IOR/Z/L/PS/9/10 Title: Register of Letters from and Despatches to Aden, Persian Gulf and Zanzibar, with Indexes Collection Area: India Office Records and Private Papers Languages: English Date Range: 1881 Extent: 1 volume
23. IOR/Z/L/PS/9/11 Reference (shelfmark): IOR/Z/L/PS/9/11 Title: Register of Letters from and Despatches to Aden, Persian Gulf and Zanzibar, with Indexes Collection Area: India Office Records and Private Papers Languages: English Date Range: 1882-1883 Extent: 1 volume