551 pp Very large folding map in front, showing principal basins within the state. Outlines possibly handcolored..not sure. Included are large folding map on the Valley of Blackstone River with mills and iron works marked, large folding map on Neponset river, large folding map Charles River, large folding map on Chicopee River, large folding map on Taunton River, large folding map on Map of Boston - badly torn but repairable, large folding map on Bedford Irrigation Farm, large folding map on Heathcote Farm, large folding Map of Boston showing Health Districts, Filled and Unfilled Land. There are also numerous full page maps and diagrams. Discusses health concerns, sewage, pollution.