1. IOR/V/23/93, No 13B Reference (shelfmark): IOR/V/23/93, No 13B Title: [b] Report on the coal mines of Lakadong in the Jynteah Hills [by T. Oldham] Calcutta: Calcutta Gazette Office, 1853 Collection Area: India Office Records and Private Papers Languages: English Date Range: 1853 Extent: pp. 45-57, plans