Hello Linda:
Try this source:
New York Atlas of Historical County Boundaries, John H. Long, ed. Compiled by Kathryn Ford Thorne.
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Karlyn Knaust Elia
Ulster County Historian
11 Main Street
Saugerties, NY 12477
845-246-4754 (Office)
845-246-3542 FAX
e-mail: [log in to unmask]
Please visit the Ulster County Website:
http://www.co.ulster.ny.us/