Hopkins, Phoebe; Stephen Kindig (1989). "Knabb-Beiber Mill"(PDF). National Register of Historic Places nomination. Pennsylvania Historic and Museum Commission. Retrieved December 8, 2013.
web.archive.org
Alexander, Drury (1958). "Knabb-Bieber Mill"(PDF). HABS PA-1031. National Park Service. Archived from the original(PDF) on 2013-12-14.