During 1975, the U.S. Geological Survey, on behalf of Goddard Space Flight Center (National Aeronautics and Space Administration), conducted a survey of potential users of low-altitude satellite magnetic measurements for solid-earth geophysical and geologic studies. In May, 8900 letters and questionnaires were mailed out. This included 6000 addresses from the Society of Exploration Geophysicists' domestic mailing list and 2900 mailings to the American Geophysical Union's Geomagnetism and Paleomagnetism Section membership. By conservative estimate, there is at least a 10 percent overlap between these two mailing lists. As of September 1, we had received 2448 responses. This represents approximately 28 percent of the total number of questionnaires sent out. A summary questionnaire including the tabulated responses is shown in Table 1. The total response to each question does not always equal 2448 because no responses were given to some questions and more than one response to others. In addition to replies from individual scientists, there were several corporate responses. A detailed report summarizing the results of the survey is available from Robert D. Regan. U.S. Geological Survey, National Center (906), Reston, Va. 22092.