Letter from Thomas Gold to Dr Freeman J Dyson, Institute for Advanced Studies, Princeton, New Jersey Encloses a report about the solar device. Asks him not to trust the quality of the work done - it was not the best. Discussing the possibiliites of a better device. States he would favour a new line of work. They now have a lot of experience with electrical surface measurements, and could set up a very competent program, preferably on the stripes principle. They currently have a contract to measure photemission of lunar rocks. 1 March 1977