Are there any fans here of Alternative History? I'm personally fond og Harry Turtledove's work. For a starter I would reccomend GUNS OF THE SOUTH. Turtledove is a professor of history and his books show the research he puts into his work. The above mentioned book deals with time travelers arming the Confederate Army with AK-47 rifles. The details and the politics of the time are quite accurate and were time travel possible, the story has a good deal of plausibility. I'm not quite as fond of the STARS AND STRIPES series by Harry Harrison, though not bad for a "beach read", I guess I just prefer Turtledove's style.