Portal:Pennsylvania/Did you know/27

... that caterpillars of the Oak leafroller (pictured) and Oak leaftier moths are major defoliators of oak trees, with leafroller timber losses in Pennsylvania of over $100,000,000 in the early 1970s?
... that the unusual fully-plastered attic on the D&H Canal Co. office near Lackawaxen, Pennsylvania, may be due to use as a dormitory for laborers during high-maintenance seasons on the canal?
... that the Water Street Historic District in Lock Haven, Pennsylvania, includes the canal lock for which the city was named?
... that at Harveys Lake, Pennsylvania, the Pennsylvania Department of Transportation signed Route 415 on two highways around the lake?
... that Jeanne Clemson is credited with both preserving the Fulton Opera House, in Lancaster, Pennsylvania, from demolition, and for restoring live theater to the building?