511. IOR/L/E/9/30-148 Reference (shelfmark): IOR/L/E/9/30-148 Title: Collection 2 Civil Aviation Collection Area: India Office Records and Private Papers Languages: English Date Range: 1925-1949 Extent: 119 files
512. IOR/L/E/9/149-152 Reference (shelfmark): IOR/L/E/9/149-152 Title: Collection 3 Aviation: Airships Collection Area: India Office Records and Private Papers Languages: English Date Range: 1921-1947 Extent: 4 files
513. IOR/L/E/9/153-179 Reference (shelfmark): IOR/L/E/9/153-179 Title: Collection 16 Cotton Collection Area: India Office Records and Private Papers Languages: English Date Range: 1916-1949 Extent: 27 files
514. IOR/L/E/9/180-187 Reference (shelfmark): IOR/L/E/9/180-187 Title: Collection 17 Cesses Collection Area: India Office Records and Private Papers Languages: English Date Range: 1918-1948 Extent: 8 files
515. IOR/L/E/9/188-192 Reference (shelfmark): IOR/L/E/9/188-192 Title: Collection 18 Correspondence: Inter-Imperial relations and channel of communications Collection Area: India Office Records and Private Papers Languages: English Date Range: 1918-1938 Extent: 4 files
516. IOR/L/E/9/192-200 Reference (shelfmark): IOR/L/E/9/192-200 Title: Collection 19 Census Collection Area: India Office Records and Private Papers Languages: English Date Range: 1921-1947 Extent: 9 files
517. IOR/L/E/9/201-208 Reference (shelfmark): IOR/L/E/9/201-208 Title: Collection 20 Companies Collection Area: India Office Records and Private Papers Languages: English Date Range: 1927-1950 Extent: 8 files
518. IOR/L/E/9/209-214 Reference (shelfmark): IOR/L/E/9/209-214 Title: Collection 21 Copyright Collection Area: India Office Records and Private Papers Languages: English Date Range: 1908-1950 Extent: 6 files
519. IOR/L/E/9/215-256 Reference (shelfmark): IOR/L/E/9/215-256 Title: Collection 30 Customs and Duties Scope & Content: Collection 30/41 (International Customs Tariff Bureau and International Convention for the Publication of Customs Tariff: participation of Ceylon 1948) transferred to Commonwealth Relations Office General Department file L.2059/1 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1913-1950 Extent: 42 files
520. IOR/L/E/9/257-278 Reference (shelfmark): IOR/L/E/9/257-278 Title: Collection 36 Economics Collection Area: India Office Records and Private Papers Languages: English Date Range: 1924-1951 Extent: 22 files