The Radiological Society of North America has launched a project called the Medical Image Resource Center (MIRC) to establish a community of Web-based libraries of imaging information, including teaching files, other educational materials, and research data. This system would enable radiologic professionals to create and publish such materials more easily and to gain more convenient access to new and existing materials. An overview of the project, a brief summary of the overall requirements and objectives, and a brief description of the progress and ongoing plans for MIRC are presented.