11. IOR/L/PS/9/33 Reference (shelfmark): IOR/L/PS/9/33 Title: Secret Letters Received from areas outside India, Vol 33 Aden Collection Area: India Office Records and Private Papers Languages: English Date Range: 1854 Extent: 1 volume
12. IOR/L/PS/9/34 Reference (shelfmark): IOR/L/PS/9/34 Title: Secret Letters Received from areas outside India, Vol 34 Aden Collection Area: India Office Records and Private Papers Languages: English Date Range: 1855 Extent: 1 volume
13. IOR/L/PS/9/35 Reference (shelfmark): IOR/L/PS/9/35 Title: Secret Letters Received from areas outside India, Vol 35 Aden Collection Area: India Office Records and Private Papers Languages: English Date Range: 1856-1857 Extent: 1 volume
14. IOR/L/PS/9/36 Reference (shelfmark): IOR/L/PS/9/36 Title: Secret Letters Received from areas outside India, Vol 36 Aden Collection Area: India Office Records and Private Papers Languages: English Date Range: 1858 Extent: 1 volume
15. IOR/L/PS/9/38 Reference (shelfmark): IOR/L/PS/9/38 Title: Secret Letters Received from areas outside India, Vol 38 Zanzibar Collection Area: India Office Records and Private Papers Languages: English Date Range: 1861-1862 Extent: 1 volume
16. IOR/L/PS/9/39 Reference (shelfmark): IOR/L/PS/9/39 Title: Secret Letters Received from areas outside India, Vol 39 Aden Collection Area: India Office Records and Private Papers Languages: English Date Range: 1861-1862 Extent: 1 volume
17. IOR/L/PS/9/46 Reference (shelfmark): IOR/L/PS/9/46 Title: Secret Letters Received from areas outside India, Vol 46 Aden Collection Area: India Office Records and Private Papers Languages: English Date Range: 1871-1873 Extent: 1 volume
18. IOR/L/PS/9/47 Reference (shelfmark): IOR/L/PS/9/47 Title: Secret Letters Received from areas outside India, Vol 47 Aden Collection Area: India Office Records and Private Papers Languages: English Date Range: Jan 1874-Dec 1874 Extent: 1 volume
19. IOR/L/PS/9/48 Reference (shelfmark): IOR/L/PS/9/48 Title: Secret Letters Received from areas outside India, Vol 48 Zanzibar Collection Area: India Office Records and Private Papers Languages: English Date Range: 1867-1869 Extent: 1 volume
20. IOR/L/PS/9/49 Reference (shelfmark): IOR/L/PS/9/49 Title: Secret Letters Received from areas outside India, Vol 49 Zanzibar Collection Area: India Office Records and Private Papers Languages: English Date Range: 1870-1874 Extent: 1 volume