This map is an original hand colored engraving of New York City and Brooklyn from Johnson's “New Illustrated Family Atlas”, dated 1866.
The vertical map depicts all of Manhattan, Brooklyn, and parts of Queens, Long Island City, Astoria, Jersey City and Hoboken. It covers Brooklyn from Greenwood Cemetery in the south, northward to include Prospect Park, Bedford, Williamsburgh and Greenpoint and extends eastward as far as Evergreen Cemetery.
Detailed to the street level, the map depicts individual piers, buildings and railroads. It labels many of the public buildings on Blackwell's Island (Roosevelt Island) including the decrepit Civil War Hospital that still stands at the southern end of the Island. Both Central Park and Prospect Park are shown in stupendous detail according to the Olmstead Plans.
This is a great map from one of the prominent and illustrious American map publisher of the 19th century, A. J. Johnson.
The map is uniquely housed in an antique windowpane frame, with hand-painted script identifying the title and original publish date.