31. IOR/Z/L/PS/11/31 Reference (shelfmark): IOR/Z/L/PS/11/31 Title: Political and Secret Department Index Collection Area: India Office Records and Private Papers Languages: English Date Range: 1929 Extent: 1 volume
32. IOR/Z/L/PS/11/32 Reference (shelfmark): IOR/Z/L/PS/11/32 Title: Political and Secret Department Register Collection Area: India Office Records and Private Papers Languages: English Date Range: 1930 Extent: 1 volume
33. IOR/Z/L/PS/11/33 Reference (shelfmark): IOR/Z/L/PS/11/33 Title: Political and Secret Department Index Collection Area: India Office Records and Private Papers Languages: English Date Range: 1930 Extent: 1 volume