In order to identify long-obscured patterns of concentration in grants made by large private foundations to various types of colleges and universities in this country, a computer program capable of annual trend analyses was developed and utilized with data from the currently most comprehensive and accessible source, the grants index of "Foundation News." All grants reported in 1963, 1966, 1969, and 1970 and 276 foundations having most of the national assets and making most of the grants for all purposes, including higher education, were analyzed. Of these 276, each of which had assets of at least $8 million, a range of from 112 (1963) to 184 (1970) made grants of at least $10,000 each to a range of from 293 (1963) specifically identifiable U. S. colleges and universities. The major findings about the concentration among grantors was that each year at least 46 percent of the grants and 75 percent of the actual funds involved came from no more than 25 of the foundations, including the Ford Foundation. Although there was a slight trend toward more widespread foundation participation in academic grantmaking, the ratio of college or university recipients per foundation stayed about 2.75 per year. (Author/MJM)