Flaherty traces the history of health information needs and how library services have answered these needs. A shift has occurred in recent decades in the provision of library services from specialized practitioner information for medical professionals only to health information for the entire public, including consumer health and disaster management. As the author outlines this shift in health information needs, she includes experiential examples to discuss how the new cases were handled and how health information services might adapt for future needs. Included are case studies of controversial issues in public health and how libraries can best address them, such as, for example, the anti-vaccination movement. The author also looks at public health resources such as the federal MEDLINE resource, disaster plans, mental health information services, and health data sources. Flaherty concludes with advice on collection and staff development to aid in delivery of public health library services.