Thesis prestened to the Faculty...of the University of Pennsylvania...for the Degree of Doctor of Philosophy.
Philadelphia, Hodges & Kirk 1908. 17 S. Gr.-8°. Orig.-Umschlag. "...prestened by John Ahlum Schaeffer, Lancaser, PA." (Titel). - Titelblattrückseite mit Dank an E. F. Smith.