Jet-Age Test Pilot by Tex Johnston (legendary Boeing test pilot for the B47, B52, 707, etc)
The Wrong Stuff by Cdr. John Moore (US Navy test pilot - eg, landing Grumman F9F-7 Cougar wheels-up onto rubber-decked carrier).
Fighter Pilot's Heaven (Fight Testing the Early Jets) by Donald S. Lopez (WW2 fighter pilot, USAF test pilot, Apollo, Skylab, Dep. Dir. Smithsonian Air and Space Museum)
(All bought through Amazon)