American: Mid 20th Century
6.25 x 15.25 x .5 inches
An unusual bathymetric relief map of Long Island made as an aluminum plaque in the Art Deco taste. It also includes surrounding parts of the New York Metropolitan area in New Jersey, New York, and Connecticut. The map shows depths of major bodies of water and waterways in three-dimensional relief. This includes the Atlantic Ocean and Long Island Sound; the Hudson River and East River; and inlets and bays in Long Island. A key on an apparently later example by the same manufacturer — formerly in the collection of the George Glazer Gallery — provides that 1/8 of an inch represents 1 mile in distance or 60 feet of depth. Underwater topography is painted black, while dry land is flat (not in topographical relief) and shown in unpainted aluminum. Cartography is simple, with only Long Island and the aforementioned surrounding states named. Depths are shown only by relief, not by lines indicating depth. Bathymetry is the measurement of the depth of water in oceans, rivers, or lakes.
Condition: Very good with the usual overall oxidation and wear, minor scraping of black paint.