By chance I discovered “The lonely sky” (second hand paperback $4.95) and wish to endorse
Pilot DAR’s recommendation (#2). The book provides an interesting insight to a self-taught test pilots involvement with early transonic / supersonic flight in the Douglas Skyrocket (D-558 1 / 2).
Bill Bridgeman’s autobiography deals with down to earth flight test issues as a project development tp, often from a very personal perspective. In parts it’s a sobering read, well worth seeking out both for prospective and existing tp’s. A good ‘prequel’ to Scott Crossfield’s “Always another dawn”.
The Lonely Sky by Bill Bridgeman & Jaqueline Hazard
"I Have Left the World" - TIME