Thousands of music lovers are expected to converge on Old Pool Farm in Upper Salford Township, near bucolic Schwenksville, Pennsylvania, Aug. 15-18, for the annual Philadelphia Folk Festival that will feature more than 100 artists and acts on eight stages. Now in its 58th year, the family-friendly event, produced and presented by the Philadelphia Folksong Society, is the longest continuously running outdoor music festival in North America. [To continue reading this article -- which includes audio and video links -- click on the headline.]