21. 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
22. 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
23. IOR/L/PS/9/5 Reference (shelfmark): IOR/L/PS/9/5 Title: Secret Letters Received from areas outside India, Vol 5 Seistan Mission Collection Area: India Office Records and Private Papers Languages: English Date Range: 1871-1873 Extent: 1 volume
24. IOR/L/PS/9/2B Reference (shelfmark): IOR/L/PS/9/2B Title: Secret Letters Received from areas outside India, Vol 2 Persian, Ellis and Morier Collection Area: India Office Records and Private Papers Languages: English Date Range: 1814-1815 Extent: 1 volume
25. IOR/L/PS/9/6 Reference (shelfmark): IOR/L/PS/9/6 Title: Secret Letters Received from areas outside India, Vol 6 Baghdad (Sir H Jones) Collection Area: India Office Records and Private Papers Languages: English Date Range: 11 Jul 1798-11 Jun 1809 Extent: 1 volume
26. IOR/L/PS/9/7 Reference (shelfmark): IOR/L/PS/9/7 Title: Secret Letters Received from areas outside India, Vol 7 Baghdad (Sir H Jones) Collection Area: India Office Records and Private Papers Languages: English Date Range: 7 Nov 1807-31 May 1811 Extent: 1 volume
27. IOR/L/PS/9/37 Reference (shelfmark): IOR/L/PS/9/37 Title: Secret Letters Received from areas outside India, Vol 37 Aden and Zanzibar with Enclosures Collection Area: India Office Records and Private Papers Languages: English Date Range: 1859-1860 Extent: 1 volume
28. IOR/L/PS/9/40 Reference (shelfmark): IOR/L/PS/9/40 Title: Secret Letters Received from areas outside India, Vol 40 Aden, Muscat, Zanzibar, and Straits Settlements Collection Area: India Office Records and Private Papers Languages: English Date Range: 1863 Extent: 1 volume
29. IOR/L/PS/9/41 Reference (shelfmark): IOR/L/PS/9/41 Title: Secret Letters Received from areas outside India, Vol 41 Aden, Muscat, Zanzibar, and Straits Settlements Collection Area: India Office Records and Private Papers Languages: English Date Range: 1864 Extent: 1 volume
30. IOR/L/PS/9/42 Reference (shelfmark): IOR/L/PS/9/42 Title: Secret Letters Received from areas outside India, Vol 42 Aden, Muscat, Zanzibar, and Straits Settlements Collection Area: India Office Records and Private Papers Languages: English Date Range: 1865 Extent: 1 volume