Letter from Thomas Gold to John Vaughan, Astro-Electronics Division, Defense Electronics Products, Radio Corporation of America, New Jersey Concerning the TIGRIS project. Has told NASA that, although he is interested and wants to follow 'TIGRIS through a successful sounding rocket phase, eventually to a satellite', he is not certain that 'the performance of the tube was good enough to design a flight model'. Describes the development of the project and asks if John Vaughan would like to prepare the proposal for Phase II of the project. 23 July 1965