6. Brookfield sheet.

No. 6. Massachusetts-Connecticut. Brookfield 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 E.W.F. Natter and W.J. Grambs. Surveyed in 1886-7. (1893)

Geological Survey (U.S.)

1893

1893

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