Report of the Commission to Locate the Site of the Frontier Forts of Pennsylvania: Prefatory note. The Indian forts of the Blue Mountains. By H.M. Richards. The frontier forts within the north and west branches of the Susquehanna River. By J.M. Buckalew. The frontier forts within the Wyoming valley region. By S. Reynolds. The frontier forts in the Cumberland and Juniata valleys. By J.G. Weiser