A diagram of the triangulation for the survey of the coast of the United States, made in 1817 and 1833, and the secondary triangles made in 1833 & 1834 in Connecticut & upon Long Island

A diagram of the triangulation for the survey of the coast of the United States, made in 1817 and 1833, and the secondary triangles made in 1833 & 1834 in Connecticut & upon Long Island

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