Thornton, William2018-02-132018-02-131977-11-06http://hdl.handle.net/2152.3/5671This image reflects a handwritten letter written by William E. Thornton and is a Chronological Recap for Testing Efforts at Avionics Research Products.William ThorntonChronological Recaptesting effortshandwritten notesletterBruce Del MarJohn WallaceSpace MedicineR.I. CherryAmbulatoryBlood Pressure MonitorAvionics Research ProductsChronological Recap to Testing Efforts letter to Bruce Del Mar handwritten