Title: East River, Hell Gate and Little Hell Gate, N. Y. Letter from the Acting Secretary of War, transmitting, with a letter from the Chief of Engineers, reports on examination and survey of East River and Little Hell Gate, N. Y., and resurvey of Hell Gate, including any ledge or ledges near to the Westerly Shore
Subjects: Topographical surveying
Places: East River (N.Y.), New York (N.Y.)