The article presents information about this special "Medical Care Issue," which presents reports of several specific programs that illustrate contributory streams in this larger movement of medical care organization. The variety in the movement derives from locality as well as content. One report in this issue comes from the Appalachian coalfields, where new forms of consumer-sponsored prepaid group medical practice are evolving. Another comes from the nation's capital, where a long established health insurance plan has added drugs to its benefits. Another comes from New York City, where organized "home care" has been explored, for the first time as a feature of hospitalization insurance. Another comes from Southern California, where efforts are being made to up-grade the quality of nursing homes. Another comes from a college town in Kentucky, where a great new medical center is being established. Two papers of generic orientation are then presented: one is on the economic characteristics of health services and how they differ from other services or commodities. The final paper offers a review of sociological research conducted on the organization of medical care over the years.