Dr. M. P. A. Sheaffer (pseudonym: P. A. Shepherd) is a professor at Millersville University of Pennsylvania in the Pennsylvania System of Higher Education, teaching in the Division...ver maisDr. M. P. A. Sheaffer (pseudonym: P. A. Shepherd) is a professor at Millersville University of Pennsylvania in the Pennsylvania System of Higher Education, teaching in the Division of Humanities and Social Sciences. Dr. Sheaffer holds a teaching certificate for teaching English to nonnative speakers with experience in Italy and Austria, a BSEd in English, and graduate degrees in English literature and in art history. Dr. Sheaffer is also a published poet and a professional musician.ver menos