171. IOR/L/PS/9/54 Reference (shelfmark): IOR/L/PS/9/54 Title: Vol 4 Political and Secret Letters Received from Aden Collection Area: India Office Records and Private Papers Languages: English Date Range: 1877-1880 Extent: 1 volume
172. IOR/L/PS/9/55 Reference (shelfmark): IOR/L/PS/9/55 Title: Vol 5 Political and Secret Letters Received from Aden Collection Area: India Office Records and Private Papers Languages: English Date Range: 1881-1884 Extent: 1 volume
173. IOR/L/PS/9/56 Reference (shelfmark): IOR/L/PS/9/56 Title: Vol 6 Political and Secret Letters Received from Aden Collection Area: India Office Records and Private Papers Languages: English Date Range: 1885-1888 Extent: 1 volume
174. IOR/L/PS/9/57 Reference (shelfmark): IOR/L/PS/9/57 Title: Vol 7 Political and Secret Letters Received from Aden Collection Area: India Office Records and Private Papers Languages: English Date Range: 1889-1896 Extent: 1 volume
175. IOR/L/PS/9/58 Reference (shelfmark): IOR/L/PS/9/58 Title: Vol 8 Political and Secret Letters Received from Aden Collection Area: India Office Records and Private Papers Languages: English Date Range: 1897-1899 Extent: 1 volume
176. IOR/L/PS/9/59 Reference (shelfmark): IOR/L/PS/9/59 Title: Vol 9 Political and Secret Letters Received from Aden Collection Area: India Office Records and Private Papers Languages: English Date Range: 1900-1902 Extent: 1 volume
177. IOR/L/PS/9/60 Reference (shelfmark): IOR/L/PS/9/60 Title: Vol 10 Political and Secret Letters Received from Aden Collection Area: India Office Records and Private Papers Languages: English Date Range: 1903 Extent: 1 volume
178. IOR/L/PS/9/61 Reference (shelfmark): IOR/L/PS/9/61 Title: Vol 11 Political and Secret Letters Received from Aden Collection Area: India Office Records and Private Papers Languages: English Date Range: 1904-1911 Extent: 1 volume
179. IOR/L/PS/9/2A Reference (shelfmark): IOR/L/PS/9/2A Title: Secret Letters Received from areas outside India, Vol 1 Bourbon and Mauritius Collection Area: India Office Records and Private Papers Languages: English Date Range: 24 Jul 1810-2 Apr 1811 Extent: 1 volume
180. IOR/L/PS/9/4 Reference (shelfmark): IOR/L/PS/9/4 Title: Secret Letters Received from areas outside India, Vol 4 Mekran Mission Collection Area: India Office Records and Private Papers Languages: English Date Range: 1870-1871 Extent: 1 volume