Extract: The Food Stamp Program was made part of permanent legislation in 1964. Studies of the economic impact of the program have been conducted by scientists in government, universities, and private research agencies. Since the program is relatively new, the existence of many of these studies is not generally known. This bibliography contains brief descriptions of the major empirical studies completed prior to 1974. Studies included relate to performance aspects of the various food stamp programs which have been tried. It is hoped that the bibliography will be helpful to scientists interested in conducting food stamp studies, and to policymakers. (Author)