- Massachusetts, Metropolitan Water and Sewerage Board
- Digital Commonwealth
- Commonwealth of Massachusetts State Archives
Print in album Photographs MWW Wachusett Dam construction, Vol. 6; also in Photographs MWW structures of Metropolitan Water Works, Vol. 2. Hawthorn trees. Massachusetts Metropolitan District Commission; Massachusetts Department of Conservation and Recreation; Massachusetts Water Resources Authority. Published in Sixth annual report of the Metropolitan Water and Sewerage Board for the year 1906 (1907), frontispiece.
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