John is the president of Aurora Press, Inc., a publisher of trade paperback books. Formerly, John served as director and treasurer of Silby Guffey & Co., Inc., a venture capital firm investing in early stage companies in the health care and environmental industries. He holds directorships with various nonprofit organizations, and he is also a founder of Calvert Group, Ltd. and a trustee of select Calvert mutual funds. John earned a BS from the University of Pennsylvania's Wharton School. John Guffey founded Calvert, a $15 billion investment management group in Bethesda, MD noted for their leadership in the area of socially responsible investment. He has worked as the Ventures Fund manager for the environmental and health care fields since 1998. He has degrees in Economics and Finance from the Wharton School of Finance at the University of Pennsylvania.