1 item foundYou searched for: Date: 1930s✖Subject: Structures✖Subject: Hydraulic✖Type: Document✖This SiteAll Sites TableGridIndex TitleTypeSubjectCreatorDatePlaceRightsDescription Refine Your SearchRefine Your SearchSubjectPlacesStructures✖Hydraulic✖DamTypeDocument✖ProjectionPlanPlaceNortheast HarborDate1930s✖ContributorNortheast Harbor LibraryBBlueprint for raising Lower Hadlock Pond Dam