The Eastern White Oak, or white oak, is hands down my favorite tree to hunt. Deer would rather eat white oak acorns than anything else I know of. I've had some great experiences hunting white oaks, including a hunt that I wrote about last week.
2008 Update: In the area of Tennessee where I am hunting this year, the white oaks have produced a bumper crop of acorns! Things are looking good.
Two features in the second picture are characteristic of white oaks. Often the trunk will fork into two or more large sections. It is also common for some of the large limbs to grow almost horizontally, like the one on the left side of the right-hand fork in this photo.
If you are looking for a handy field guide that you can throw in your pack the next time you are out scouting, I recommend either or both of these books. I use both because often one will have a better photo or illustration than the other and two points of reference always helps. If you don't want to spend the cash for two books, I'd give a slight edge to the Peterson's Guide.
Next, we will look at the Southern Red Oak.