Title: Harbor at Mackinac Island, Mich. Letter from the Secretary of War, transmitting, with a letter from the Chief of Engineers, report on preliminary examination of harbor at Mackinac Island, Mich., with a view of extending the east breakwater a distance of 400 feet
Subjects: Hydrography, United States, United States. Army. Corps of Engineers
Places: Mackinac Island (Mich.)