Letter from Thomas Gold to Professor Henry G Booker, Chairman, Department of Applied Electrophysics, University of California Thanks Professor Booker for his letter and the documents. Says that Arecibo [Ionospheric Observatory] is running well and thinks that Findlay is doing a very good job with regard to the Administration. Says that Professor Booker and any of his graduate students can carry out research at Arecibo if they would like to. Also says that they will tell Professor Booker about what is going on. 26 October 1965