Data from 43 responses to a questionnaire distributed to the academic members of the RASD Discussion Group in Reference Services in Large Research Libraries are summarized in tables. The purpose of the survey was to reflect patterns of staff size, services, and organization in reference departments in large academic libraries. The tables present the following information: (1) data on staff size and responsibilities; (2) reference departments grouped by labor intensive services offered; (3) work schedules; (4) utilization of non-professional staff; (5) instructional offerings of reference departments; (6) changes in staff workload over the last five years; and (7) reference collections. Information was also collected on sex, experience, and educational backgrounds of reference librarians. (Author/AP)