Oxford Tree-Ring Laboratory - Pennsylvania


Hellam Barn

Timber Frame Barn, Historic Hellam Preserve, Hellam Township, Pennsylvania (39.789947, -76.5745562)

Primary Structure Felling Dates: Spring 1856, Spring 1857, Summer 1857

Brace (2/2) 1856 (½C), 1855 (½C); Ceiling joists (1/9) 1856 (¼C); Floor joists (0/3). Site Master 1797-1856 HYSONx1 (t =5.81 eapenn; 5.13 PA009; 5.08 TB).

The Hyson Schoolhouse is a single-roomed stone structure measuring 24 feet by 26 feet. It was possibly built by Archibald Hyson, a local landowner and carpenter. The schoolhouse was converted to a private residence when a new schoolhouse was built across the street in 1892.

Dendrochronological analysis has shown that the original structure was built in the summer of 1857 or shortly thereafter.

Worthington, M J and Seiter, J I 2015 The Tree-Ring Dating of the Hyson Schoolhouse, Stewartstown, Pennsylvania, unpublished Oxford Tree-Ring Laboratory archive report 2015/14




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Contact Information

Oxford Tree-Ring Laboratory

Michael Worthington
Jane Seiter, Ph.D

25 E. Montgomery St.
Baltimore, MD 21230