Chapter I provides a background and explains pertinent library lighting problems such as quality, function, aesthetics, intensity, and costs. Emphasis is on the quality and function of lighting for library users. Chapter II deals with the comments and answers to questions by persons who have a special interest and competence in the field of library lighting or who are involved directly or indirectly in at least one of its five major aspects. The individuals consulted are listed in Appendix A. Chapter III presents the conclusions reached by the author on different aspects of library lighting, and Chapter IV contains recommendations. A major objective of the study has been to make available to those involved in planning library buildings a summary of the different points of view of the consultants who included the following: (a) Persons having first-hand experience with the planning and installation of library lighting: architects, consulting and construction engineers and contractors, illuminating engineers, and interior designers; (b) Persons with particular competence in fields indirectly involved in library lighting: opthalmologists and other physicians, one conservation expert, psychologists and reading experts, and financial and plant maintenance officers of academic institutions; and (c) Users of libraries: research scholars and librarians. (Author/NH)