Oxford Tree-Ring Laboratory - Pennsylvania
Primary house Felling Dates: Summer 1750, Spring 1751, Summer 1751
Studs (3/5) 1749 (½C) 1750 (¼C, ½C ); Rafters (3/4) 1679, 1688 and 1750 (¼C) Site Master 1595-1750 NPWx1 (t = 7.09 PHILY; 6.91 CCPA; 6.80 FORES).
Dendrochronological analysis was undertaken on the house located at 322 North Providence Road in Wallingford, PA, in order to date the primary construction phase of the building. Samples taken from the roof structure yielded felling dates stretching from the summer of 1750 to the summer of 1751, indicating that the original wood-framed structure was built in the summer of 1751 or shortly thereafter.
Worthington, M J and Seiter, J I 2012 The Tree-Ring Dating of 322 North Providence Road, Wallingford, Pennsylvania, unpublished Oxford Tree-Ring Laboratory archive report 2012/1
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Baltimore, MD 21230