The National Network of Libraries of Medicine, Greater Midwest Region (NNLM GMR) received funding to support the evaluation and development of an asynchronous consumer health information course. Requirements of this project included: incorporating recommendations from NNLM instructors, National Library of Medicine staff and public library staff; piloting the revised course with a nationwide cohort; incorporating feedback from the pilot; and delivering a second instance of the revised course. The revised course meets existing requirements for public library certification and for Level 1 certification of the Medical Library Association's Consumer Health Information Specialization. Keywords Public libraries, consumer health, asynchronous BACKGROUND Public libraries are a cornerstone of health information access for their communities. Even before the general public's widespread adoption of the internet, libraries provided health information through print materials (Dalton and Gartenfeld 1981), CD-ROMs (Schell, Kitendaugh and Siegel 1999), and answering health reference questions (Deering and Harris 1996). Today's increased availability of information online, often of dubious quality (Fox, Duggan 2013), creates a need for greater discernment in locating authoritative and reliable health information. In addition, changes to the United States healthcare system increase the need for patients and health care consumers to become more knowledgeable and engaged in their care (Office of Disease Prevention and Health 2010, Kaiser 2005). Barriers to effective patient engagement include both low health literacy and low digital literacy. Through providing access to actionable health information, reaching out to underserved populations, and hosting health-