Gilruth, Robert2018-02-132018-02-131971-01-08http://hdl.handle.net/2152.3/5659This image reflects a letter written by Robert Gilruth of NASA and is the permission for William Thornton to serve as a consultant to Avionics Research Products. The subject matter is noted as Astronaut Investments.Robert GilruthWilliam ThorntonJohn WallaceSpace MedicineUTMBletterBlood Pressure MonitorAstronaut Investments