In the 1950s, I proposed the survivor method of determining the efficient sizes of enterprises, and worked on delivered price systems, vertical integration, and similar topics.

I recall my mother asking in about 1946 what I was and I replied proudly that I was a professor. A decade later she repeated her question and I repeated my answer. "No promotion?" was her comment.

My interests were aroused, and my faith in the cliches of the subject destroyed, as so often with other subjects, by the discussions with my friend, Aaron Director.

It was in the 1960s that I began the detailed study of public regulation.

That subject has lost its one time appeal to economists as our science has become more abstract, but my interest has even grown more intense as the questions raised by the sociology of science became more prominent.

I attended schools in Seattle through the University of Washington, from which I was graduated in 1931. I spent the next year at Northwestern University.

I met my wife, Margaret L. Mack, at the University of Chicago. We were married in 1936. She died in 1970.