1. IOR/V/27/422/13 Reference (shelfmark): IOR/V/27/422/13 Title: Hedley, W C, Notes on the organisation, methods and processes of the Photo-Litho Office, Calcutta. 3rd edition. Calcutta, 1924 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1924 Extent: 1 volume