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New York (State). State Engineer and Surveyor
New York (State). Department of Transportation
Erie Canal (N.Y.)
New York (State)
New York State Barge Canal System (N.Y.)
Black River Canal (N.Y.)
Canals--New York (State)--Design and construction
Diagrams
Plans (orthographic projections)
Maps (documents)
Tracings
Transverse sections
Blueprints
Constructing canals
Constructing