A unusual triangulation chart of the New York and New Jersey coast line from the scarce 1848 edition of the Superintendent's  Report .  Covers from the Delaware Bay north to New York City then east along Long Island as far as Block Island.  Shows various triangulation points and some of the attached river systems.  Includes New York City, Philadelphia, Wilmington, Trenton, Newark, Elizabethtown, and New Haven.   The 1848 edition of the Superintendent's  Report  is highly unusual in that its maps do not have borders, was common in all subsequent editions.
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<a href="https://en.wikipedia.org/wiki/United_States_Coast_Survey" class="extiw" title="en:United States Coast Survey">United States Coast Survey</a></div>
1848 (dated)
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