In 1991-1992, the Massachusetts Institute of Technology (MIT) Libraries conducted an Information Services Study with support from the Office of the Provost. Its purpose was to study how faculty, research staff, and students in three disciplines on campus gather information for their work. Members of the departments of Brain and Cognitive Sciences, Management Science in the Sloan School of Management, and Materials Science and Engineering were asked about the information sources they use and their methods of discovering these. The staff assigned to the study were then expected to formulate preliminary recommendations for library and information services based on the findings. This report contains the summary of responses to the questionnaire, themes, recommendations for services, and suggestions for further research. Included in the appendices are the organization of the study; a list of sources, including annotated bibliographies of sources consulted for instrument development and sources for alternative methodologies; areas for question development; data gathering instruments, including "MIT Community Survey of Information Acquisition and Usage," the interview guide, and the focus group discussion guide; and a statistical summary of the questionnaire. (Contains 82 references.) (JLB)