From time to time during the past several years many law librarians in the United States with institutional commitments for the development of foreign and international law collections have voiced their deep concern about the intrinsic research value of their existing holdings of foreign and international law materials and, even more so, about the ability of their libraries to maintain the future growth of such collections at a sufficiently high scholarly level. Their disquietude was not without a reason. The United States could always pride itself in having several distinguished law libraries with some of the best research collections of legal materials in the world. The reputation of these collections was so great that generation after generation of legal scholars did much of their research work in them. There were also many other law libraries in the United States but they were generally small and did not specialize in foreign and international law. An unexpected development occured, however, in the two decades after World War II. Many of the smaller law libraries as well as a number of new libraries began to expand their holdings at a phenomenal rate of growth. They began also to branch out into areas they had not been previously familiar with, and some of them succeeded in establishing sizable collections of foreign and international law materials within the relatively short period of less than twenty years. After several decades of this unprecedented and frequently indiscriminate expansion, culminating in the emergence of a wide variety of foreign and international law collections, many of these libraries were suddenly faced in the early 1970's with a series of critical problems.