Knabb-Bieber Mill
 The Knabb-Bieber Mill is located in Oley Township Pennsylvania. The mill was built in 1809 and was added to the National Register of Historic Places on November 8 1990.This grist mill was built in 1809 by a member of one of the Knabb families and was acquired around 1875 by John Bieber by his marriage to Maggie Knabb. Their fourth son Effinger Bieber inherited the property. He married Mary Moyer. They ran the mill until his death in 1996.