found: His Introduction to music, c1992:CIP t.p. (Ronald Pen, Ph.D., University of Ky.)
found: I wonder as I wander, c2010:ECIP t.p. (Ron Pen) data view (professor at University of Ky.)
found: University of Kentucky College of Fine Arts, School of Music, About, Faculty and Staff, Ron Pen (online) viewed July 27, 2017:(Ronald Pen, usage: Ron Pen; BA from Washington and Lee University (1973), MA from Tulane University (1982), PhD University of Kentucky (1987). Professor at University of Kentucky since 1991 in Appalachian music and director of John Jacob Niles Center for American Music); CV (Ronald A. Pen)
found: United States Public Records, 1970-2009 via FamilySearch (online), viewed July 27, 2017(Ronald A. Pen; birth date: September 1, 1953; residence in Lexington, Ky.)