There was a book length biography of Vannevar Bush published a few years ago -- "Endless Frontier: Vannevar Bush, Engineer of the American Century" by G. Pascal

There was a book length biography of Vannevar Bush published a few years ago -- "Endless Frontier: Vannevar Bush, Engineer of the American Century" by G. Pascal Zachary that was quite good. The phrase "Endless Frontier" is a a reference to an essay that Bush wrote entitled "Science, the Endless Frontier" that argued for the continued federal funding of science after WWII.