Title: Reservoirs at headwaters of Mississippi River. Letter from the Secretary of War, transmitting, with a letter from the Chief of Engineers, report on examination of reservoirs at headwaters of Mississippi River with a view to the construction of locks in the dams heretofore built at Pokegama, Winnibigoshish, and Leech Lakes, in the State of Minnesota
Subjects: Maps, Reservoirs
Places: Mississippi River