Offers two extended essays by two eminent social scientists on trusteeship and foundation management. The first essay, by Dr. Moore, reflects the author's long interest in the relations between the economy and the society. He examines trusteeship as a combination and interrelation of three main principles: custodial relations, lay control, and the law of trusts. Dr. Young's essay, the longer and more pragmatic of the two, applies these principles to the actual management of philanthropic foundations. Dr. Young draws upon his experience as a president of two social science foundations in his discussion of both the old and new "proprietary" foundations.