Harold R. Doughty Related books Guide to American Graduate Schools (Guide to American Graduate Schools) Penguin USA • 1994 Guide to American Graduate Schools: Eighth Revised Edition (Guide to American Graduate Schools) Penguin USA • 1997 The Penguin Guide to American Business Schools Penguin Group USA • 2000 The Penguin Guide to American Medical and Dental Schools (Penguin Original) Penguin Group USA • 1999