Tuxedo Park: A Wall Street Tycoon and the Secret Palace of Science that Changed the Course of World War II by Jennet Conant

About Alfred Loomis, a Wall Street tycoon who sold out just before the crash. Built a lab, hired all the best scientists, and became a bona fide scientist himself. Started a radar lab at the onset of WWII that may have won the war. Very interesting, well-written, and has all the great names of physics of the era.