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New York (State). Department of Transportation
Erie Canal (N.Y.)
New York (State)
New York (State)--Western New York
Black River Canal (N.Y.)
Oswego Canal (N.Y.)
Locks (Hydraulic engineering)
Bridges
Dams--Drawings
Canals--Design and construction
Plans (orthographic projections)
Profiles
Cross sections
Surveys
Maintaining infrastructure
Constructing canals