Forwarded from Tim Stowell who posted it to the NYDUTCHE (Dutchess County NY) genealogical mailing list, is notice of this massive online archive from the Western New York Library Resources Council. It includes a tremendous collection of maps of the Holland Patent area which are held by the State University of New York at Fredonia.
According to Stowell, “These maps are mainly about New York state and western New York at that – from Herkimer west, but also contain early maps from Pennsylvania to Maine to Georgia and points in between.”