http://www.alternatehistory.com/discussion/showthread.php?t=...
The timeline diverges from reality when a Soviet submarine captain launches a nuclear torpedo at an American ship, which then gradually spirals into all-out nuclear war. This very nearly actually happened: the three main officers on the submarine had to unanimously agree to use nuclear weapons, and two of them were in favor. The third one managed to talk them down.
Not a bad book - my main nitpick with it being that its scenario has Western Europe coming off fairly untouched by the war which would have been extremely unlikely.
http://en.wikipedia.org/wiki/Resurrection_Day
[Resurrection Day also features a "Lake Washington"]
One thing I did take away: the military kept using more extreme and dangerous measures (mainly in my mind the fully loaded bombers circling 24x7 over Europe) with the military trying to install fail-deadly mission objectives (ie: circle Europe for your daily bombing run, and if you don't hear an all clear message, assume the USA is being attacked and bomb the Soviet Union). One point seemed to be made though was: for all of the idiocy and lack of control during the arms race there were no actual nuclear detonations, so were the weapons at the time actually safe (even though many improved safety mechanisms were ignored by the military), or was it just luck due to small-enough sample size and a luckily short enough time span?
I actually ordered off of Amazon these two books cited by Schossler and just received them in the last two weeks and am really looking forward to reading them:
The Making of the Atomic Bomb - Richard Rhodes:
~900 page book that is supposed to be the seminal book about the history of the bomb; also is apparently very detailed in the physics of the endeavor which should be very interesting.
American Prometheus - Kai Bird & Martin J. Sherwin (this just arrived at my house yesterday actually):
~700 pages and the definitive biography of Robert J. Oppenheimer:
Actually, here's some of the relevant stuff: http://www.youtube.com/watch?v=HZVR-DKERhc