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You searched for: Acquisition Source Knee, H. R. Remove constraint Acquisition Source: Knee, H. R. Date ca. 1890-1920 Remove constraint Date: ca. 1890-1920 Topical Subjects Dams--Monongahela River (W. Va. and Pa.)--Design and construction. Remove constraint Topical Subjects: Dams--Monongahela River (W. Va. and Pa.)--Design and construction.
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View of construction site of a lock and dam with crew members along Monongahela River.