This study explores means by which biomedical information might be distributed over a network to physicians and other personnel in the health sciences. Health Science libraries of all types are surveyed in terms of location, facilities, collection, staff, budget, and services. The library's user group is presented, and cooperative agreements among groups of libraries are studied. It is suggested that health-science libraries become major components of the proposed biomedical-information network. The hospital library is to become the physician's primary information source for all types of information; from there, the request is referred to the District Library for professional handling. The Reservoir Library serves as backstop for virtually all needs of District Libraries. The National Library of Medicine provides training and bibliographic services as well as administration of the system. District and Reservoir Libraries are to be linked by electronic means to each other and to the National Library of Medicine. Computer services at the Reservoir Library are available for housekeeping tasks and information retrieval. Extensive retraining of librarians for aggressive information service and carefully established relationships between the three levels of libraries and the National Library of Medicine are essential. (Author/MF)