Sandy Henderson was a British economist who joined the faculty at the Tepper School of Business at an early date. A person of wide interests and lively wit he livened up the place considerably especially in the (then) frequent seminars which were generally attended by all faculty and students. His original reputation in economics rested on work he had done in consumer behavior in "welfare economics." At the Tepper school, however, he joined a project (which I directed) on Intra-Firm Behavior which was sponsored by the U.S. Air Force "Project Scoop"--Scientific Computation of Optimum Programs--as part of a program in developing new computerized approaches to management. In this context Sandy's interest switched to "Inter-Industry Economics" (as it was called by the Government) or "Input-Output Analysis" as it was called by everybody else. In fact, Sandy had a manuscript in preparation for an introductory book on this topic when he died. Subsequently Sandy switched from "input-output analysis" to "linear programming" and in the course of working on this topic he co-authored a book on that topic with A. Charnes (a member of Carnegie Mellon's Math Department) and me. This book was published in paperback form by John Wiley & Sons, Inc., in 1953, under the title An Introduction to Linear Programming. It consisted of two parts as follows: Part I: An Economic Introduction to Linear Programming by W.W. Cooper and A. Henderson; and Part II: Lectures on the Mathematical Theory of Linear Programming by A. Charnes. This was the first text on the topic and with sales of some 40,000 copies it helped greatly in the spread (and use) of linear (mathematical) programming. As a condition of publication for this book, the three of us (Charnes, Henderson and I) agreed that we would subsequently expand this small paperback book into a hard cover version. This led to the two volume monograph, by A. Charnes and me, entitled Management Models and Industrial Applications of Linear Programming (Wiley, 1961), a book that would have benefited greatly from Sandy's participation. His untimely death (in his early 40s) precluded this possibility. His death was a loss to the world as well as to the Tepper School.