"Harbor map no."--Upper left margin. "The Triangulation was executed in 1833, the Topography in 1837 and 1838, and the Hydrography in 1838." Relief shown by hachures and landform drawings; depths shown by soundings, shading, and isolines. "A.D. Bache Superintendent." "Verified by A.A. Humphreys ... & Assistant." "The plan of the City of New Haven is in part from the printed plan of D.W. Buckingham Esq." "Final reduction for Engraving by Jno. B. Glück, Draughtsman." "Engraved by Sherman & Smith, N.Y."