This early scientific comparative cartographic survey was compiled in 1850 by the office of the U.S. Coast Survey under Superintendent Alexander Dallas Bache. The chart documents the dynamic geomorphological evolution and littoral drift of the Sandy Hook peninsula at the entrance to New York Harbor across a span of 72 years, overlaying historical shoreline outlines from various military and federal hydrographic surveys. The progression begins with surveys conducted by British military cartographers during the American Revolutionary War, including Lieutenant John Hills in 1778 and J.F.W. des Barres in 1779. It subsequently traces the shifting coastal spit through early American surveys by Captain Leconte (1819) and Major Bache (1842), culminating in detailed Coast Survey tracings from 1835, 1844, 1848, and 1850. Fixed navigational landmarks, including the historic Sandy Hook Light and the East and West Beacons, serve as reference points illustrating the northward elongation and morphological migration of the barrier spit.