.1) Overland Centenary Supplement to The Australian. Six pages of information and images including the Roper River Camp, First Telegraph Pole at Port Darwin, Route of the Overland Telegraph, Australian Telecommunications Development Association, Alice Springs, Frew's Ponds. Charles Todd, Alice ToddFrank Kraegen, Pony Express. .2) 'The O.T. Line' - four page coloured news shhet published of by the Australian Post Office for the Overland Telegraph Line Centenary, 22 August 1972. Includes articles and images such as J.A.G. Little (Darwin Poatmaster), Robert Patterson, Charles Todd, A.J. Mitchell (surveyor), Maps of the sections (Begot's contract, Central Sections, Darwent and Dalwood contract, Patterson contract), planting of the first pole at Darwin, Roper River Camp, Charles Todd, Alice Todd, Alice Springs Repeater Station, Grave of Kavenagh, Roper River, Frank Kraegem, Maryvale station.