local and regional history. From 1947 to 1994, the publication was bound in a distinctive blue buckram hardcover binding with gilt lettering. In 1994, the journal was published in softcover. Publication of Proceedings was discontinued in 2004. See also Allentown, Pennsylvania Lehigh County, Pennsylvania List of historic places in Allentown, Pennsylvania List of historical societies Mahlon Hellerich References External links Official Web Site. Google Map location for the museum. 1904 establishments in Pennsylvania Historical societies in Pennsylvania History museums in Pennsylvania History of Allentown, Pennsylvania Museums in Allentown, Pennsylvania Organizations based in Allentown, Pennsylvania