...For years, NYU told the public that, at Greenspan's request, the thesis was locked away from public view in a vault at its Bobst Library. Auerbach himself was told this in January 2004 when he tried to obtain a copy...Auerbach, who has a PhD in economics from the University of Chicago (Nobel laureate Milton Friedman was his thesis adviser), kept requesting access to the papers until NYU's provost, David McLaughlin, finally admitted in August 2005 that, "I can tell you that it was the practice of the business school, during the 1970s, not to deposit dissertations with the library. Thus, a copy of Greenspan's dissertation is not in the Bobst Library. We suggest that you contact Greenspan directly in order to obtain a copy of his dissertation."