1. IOR/V/26/640 Reference (shelfmark): IOR/V/26/640 Title: Chemicals and Engineering Collection Area: India Office Records and Private Papers Languages: English Date Range: 1920-1940 Extent: 2 volumes
2. IOR/V/26/640/2 Reference (shelfmark): IOR/V/26/640/2 Title: Bihar Chemical Industries (Khan) Committee 1938-39: Report. [Patna, 1940] Collection Area: India Office Records and Private Papers Languages: English Date Range: 1940 Extent: 1 volume
3. IOR/V/26/640/1 Reference (shelfmark): IOR/V/26/640/1 Title: Chemical Services (Thorpe) Committee 1920: Report. Simla, 1920 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1920 Extent: 1 volume