Ryan- Topo maps are also available from the USGS, but run around $15 each. Thge bright side is you can download them for free, and print them out at home. A quad map, blown up to about 1 1/2 inch per square mile takes 9 sheets of paper. I just trim them up and tape them together from both sides.
Bill's suggestion is good on the BLM maps showing their ground, and I'll toss in the USFS, both agencies sell their maps at all District/Ranger District and National Forest offices. While at USFS get a set of the MVUM maps (free) for the areas you want. They show what roads are open to motorized use. Their policy for the past 10 years has been "closed unless posted open", and in most cases the MVUM's are their "posting"