First School Slate Factory. The first factory to produce blackboard and school slates common in U.S. classrooms opened nearby in 1847. Slate production peaked at over one million pieces early in the 20th century, leading to Slatington's distinction as the nation's top slate and blackboard producer.

Main and Factory Sts., Slatington, PA, United States

Trucker's Mill. A sawmill, built before 1755, and used as a station for troops at time of the French and Indian War, stood about 200 feet north of here. Known also as Kern's Fort, its position on two pioneer roads gave it much military value.

Main St. (PA 873) near Diamond St., at Gen. Morgan bridge, Slatington, PA, United States

Slate Industry. One of the largest slate-producing centers in the United States. Welsh slate entrepreneur William Roberts first sighted slate in 1844 near a local barn. He and other Welsh immigrants established and worked in numerous slate quarries in this region. Nearby quarries included "Big Franklin"( c.1852), the largest excavation in Slatington; and "Williams," known for its production of school slate. These sites also contributed to the increase of slate roofing during the late 19th century.

Main and Railroad Sts., across from Slatington Trailhead, Slatington, PA, United States