Ironically, the successful conviction on the part of Columbia's graduate students to preserve for posterity what I believe is perhaps the most thorough-going and most painlessly digested summary of economic-thought developments has never had Professor Mitchell's backing, and before his death Mitchell disclaimed any responsibility for errors that might have slipped into the quick-handed note taker's record since Mitchell had not even read what must have become the treasured possession of many a mature intellect among the large number of his students from both this country and abroad.