These are collections about Otsego County. To see a full list of contributing organizations from Otsego County, which have posted material about other areas, click here.
Stereographs were a pair of photographs taken at the same moment but from inches apart, so that when viewed through a stereoscopic viewer, there was an illusion of 3D depth to them (like a modern Viewmaster toy). The New York Public Library Digital Collections includes 47 stereographs specific to Cooperstown and Lake Otsego.