The Escape of Sigmund Freud : Freud's Final Years in Vienna And His Flight From The Nazi Rise
by David Cohen

The title of this book is very misleading. You don't read about his escape until you are more than halfway through the book. First, you must plow through copious amounts of detail and information on psychoanalysis plus the people who were active in this field.
Apparently, a Nazi named Anton Sauerwald saved Sigmund Freud but I never got to that point. The writing is very plodding and could be used in a university.
Not recommended.