On display through early spring 2017: 19th century diagrams of New York State canal bridges from the Annual Report of the State Engineer and Surveyor on the Canals for 1859. 

Created by Van R. Richmond, State Engineer and Surveyor for the Enlarged Erie Canal, the diagrams represent the arch truss bridge design patented by Squire Whipple (1804-1888), widely known as the father of iron bridge building in America. The collection of framed works was donated to the Erie Canal Museum by Michael Lahti of Sayville, New York.