Compiled from responses to a questionnaire by the 98 academic research library members and 12 nonuniversity members of the Association of Research Libraries, these 1978-79 statistics provide data on their collections, interlibrary loan programs, expenditures, microform holdings, and personnel, as well as university enrollments and doctoral programs. University libraries are rank-ordered in 14 different categories: (1) volumes in library, (2) gross number of volumes added, (3) microform holdings, (4) current serials, (5) professional staff, (6) nonprofessional staff, (7) total staff, (8) materials expenditures, (9) materials and binding expenditures, (10) salaries and wages expenditures, (11) total operating expenditures, (12) total items loaned, (13) total items borrowed, and (14) current serials expenditures. Four trends are noted from examination of the media figures for university library members: ARL libraries have increased only slightly in size since 1977-78; in 1978-79, volumes added rose four percent while expenditures rose 11 percent; serials expenditures rose at a greater rate than inflation, increasing 16.3 percent, and outlays for serials accounted for 54 percent of expenditures for materials; and the median ratio of items loaned to items borrowed remained at 2.4:1, a ratio that has been stable in ARL libraries over the past several years. The questionnaire is included. (JD)