Winsor Dam Outlet Works, view inside of 48" pipe showing stainless steel plate and rebabbitted seat of 48" Dow valve, Quabbin Reservoir, Mass., Aug. 21, 1946

Winsor Dam Outlet Works, view inside of 48" pipe showing stainless steel plate and rebabbitted seat of 48" Dow valve, Quabbin Reservoir, Mass., Aug. 21, 1946

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