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Allegheny River Navigation Charts, Pittsburgh, Pennsylvania to East Brady, Pennsylvania
By United States. Army. Corps of Engineers.
Journal of Samuel Maclay while surveying the west Branch of the Susquehanna, the Sinnemahoning and the Allegheny rivers in 1790
Journal of Samuel Maclay while surveying the west Branch of the Susquehanna, the Sinnemahoning and the Allegheny rivers in 1790
By Samuel Maclay
To authorize a preliminary examination and survey of the tributaries, sources, and headwaters of the Allegheny and Susquehanna Rivers in the State of Pennsylvania.
To authorize a preliminary examination and survey of the tributaries, sources, and headwaters of the Allegheny and Susquehanna Rivers in the State of Pennsylvania.
By United States. Congress. House. Committee on Flood Control