history of Panama Canal

This is one of a series of reports and maps from the Governor of the Panama Canal between 1906 and 1914, printed by the Government Printing Office. The full title of the map is Map of Panama, Showing Canal Zone & Water Shed of Rio Chagres. To accompany the Annual Report of the Commission, Culebra C.Z., September, 1909. This particular map was printed in 1909, detailing advances in the Porto Bello rock plant, Gatun locks, and further information about construction and engineering of the Canal.