One of a series of annual studies undertaken by the Library Research Center for and on behalf of the Illinois State Library, this report provides a detailed, question-by-question examination of the 143 responses (84% of the 170 Illinois academic libraries polled) to the 1981/82 Higher Education General Information Survey/Library General Information Survey (HEGIS/LIBGIS) questionnaire of the National Center for Education Statistics. Data are presented by type of academic institution: four-year colleges and universities, two-year community colleges, and single-purpose, professional/technical institutions. Organized by the four major survey form sections, results cover (1) collections; (2) staff--composition and salaries; (3) transactions--interlibrary loans, reference and circulation, group transactions, and library hours; and (4) budgets--personnel, materials, and federal grants. Appendices provide general reference tables, institutional data for 23 of the 40 survey questions for each of the 143 libraries (listed by name and place with coded information on a selection of variables), a copy of the survey form, and a discussion of the steps taken to process the forms and verify the data, and of inadequacies of the form and reporting errors. (LMM)