Bench mark descriptions, 1911-1950.
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Queens (New York, N.Y.). Topographical Bureau
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Monuments are points used to establish the horizontal control in surveying areas. From the description of Eighty foot monument sheets, [ca. 1910-1911]. (Unknown). WorldCat record id: 155479977 Legal files concerned with transfer of private property to New York City. From the description of Title drawers, 1903-1985. (Unknown). WorldCat record id: 155480889 Bench marks are points used to establish vertical control in surveying areas. From the d...