No. 3. Mass.-Conn. Granville sheet. U.S. Geological Survey, J.W. Powell, Director. State of Connecticut ... State of Massachusetts ... commissioners. Henry Gannett, Chief Geographer. Marcus Baker, Geographer in charge. Triangulation by the U.S. Coast and Geodetic and Borden surveys. Topography by C.C. Bassett, under the direction of W.D. Johnson, topographer. Surveyed in 1886-7. (1893)