c. 1871, Archival map/chart, C 90/11
Shows route of the Overland Telegraph line from the Finke River in the Northern Territory (10 March 1871) to Depot 2, situated north of the Katherine River, Northern Territory (6 June 1871). Includes detailed description of natural features. John Ross' route shown in coloured ink. Copy made by Bessie Threadgill of lithograph in Home and Territories Office, Melbourne.