Context

Context of Map of New-York Bay and Harbor and the environs, founded upon a trigonometrical survey under the direction of F.R. Hassler, superintendent of the Survey of the Coast of the United States ; triangulation by James Ferguson and Edmund Blunt, assistants ; the hydrography under the direction of Thomas R. Gedney, lieutenant U.S. Navy ; the topography by C. Renard and T.A. Jenkins assists
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