A program of eight talks addressing the development of the Overland Telegraph line spanning Australia from south to north 15 years ago. Following the formal program there is an invitation to the audience to view the Royal Geographical Society of South Australia Todd collection in the Mortlock Wing of the Library – From 3:00pm to 4:00pm Co-sponsored by: Retired Engineers Group Bldg: Institution Building, Hetzel lecture theatre,, State Library of South Australia, Corner of North Terrace and Kintore Avenue, Adelaide, South Australia, Australia, 5000