He was known to be a very fine man and a true and curious scholar. Here is his Wikipedia page:
Warren Joseph Samuels, (born 1933, New York City, (died 2011, Gainesville, FL) was an American economist and historian of economic thought. He received a BBA from University of Miami, Miami, FL and obtained his Ph.D. from University of Wisconsin–Madison. After holding academic posts in the University of Missouri, Georgia State University, Atlanta, and University of Miami, he was appointed Professor of Economics in Michigan State University in 1968, where he stayed until his retirement in 1998.
Warren Samuels has made many extremely valuable contributions to the history of economic thought and the methodology of economics. His work has been inspired primarily by his “…interest in generating greater clarity as to the economic role of government both in the history of economic thought and in contemporary economics”.
Here is his home page, and here he is on scholar.google.com. I think of him as one of the economists who kept alive institutionalism, economic method, and history of thought as intellectually vital disciplines.
Addendum: Peter Boettke pens a fine appreciation.