The National Science Foundation (NSF) Graduate Fellows of calendar years 1952-1972 were followed up in this study to determine their subsequent career achievements. Career achievements of these individuals are discussed in terms of the following criteria: doctorate attainment, postdoctoral fellowship awards, faculty membership, dissertation adviser status, migration from Ph.D. institution to employment, research grant awards, postdoctoral employment, and publications and citations. Data on career outcomes are presented in tabular form and occasionally interpreted in graphic displays. Where feasible, comparative data on the corresponding base population of Ph.D.'s is presented. Among the major findings were: (1) 84% of the Fellows of the 1950s had attained doctorates by 1974; (2) the mean time lapse from B.A. to Ph.D. degress for NSF Fellows was about 30% less than for the comparable Ph.D.; and (3) former NSF Fellows are much more frequent contributors to the scientific literature than the typical Ph.D.'s are. (MN)