Focuses on the 133 largest foundations endowed by individuals or families, each of which in 1960 held assets of more than $10 million. While representing less than one percent of the total number, they account for the majority of income, endowment, and spending of all foundations. The author describes the economic dimensions of foundation activities in the context of the general economy and private philanthropy. He examines the process by which the foundations were established, when and how they received initial endowments, their investment patterns over a period of years, and the policies governing investment of their endowed funds.

RALPH L. NELSON is associate professor of economics at Queens College of the City University of New York.