(Hyde Hall, 53', 1825, private, 32-39-01) across Shadow Brook in Glimmerglass State Park SW of East Springfield, Otsego County, NY. CR31 SW about 4.1 miles from jct with US20 in East Springfield to the park entrance on the W. side of the road. Admission. Ask permission to visit. (6-5-06, N42° 47.40', W74° 51.84') Photo by Trish Kane.