What do you know about Frederic L. Pryor?

Timeline: Frederic L. Pryor

January 21, 2016. The spy who never was. Michigan Today. "From the late summer of 1961 until early February 1962, during the height of Cold War tension between the United States and the Soviet Union, former University of Michigan professor Frederic L. Pryor’s home was a prison cell in East Berlin."