You could just download the unit boundry shape files from the game dept and load them up in your gis program.
The WY G&F website has the description of the units somewhere. I have printed them for the unit that I hunt.
For maps, mytopo has great maps. The have pre made maps for the different units showing boundaries, or you can customize the map how you want it and they can print them on tear resistant and water proof paper. You can even get satellite image maps from them. They aren't cheap but the quality is outstanding.
The other technique I use alot is if I know a specific area I am going to be hunting. I will crop down a USGS map and a national forest map using powerpoint, add any notes I want, print them out on 8.5x11, and laminate them back to back using 3M self sealing lamination pouches. They end up being water proof, and will fold up and go in a hip pocket. I am happy to email an example and show you what they look like.
Another great option other than the USGS maps is the DIY Maps.
DIY Hunting Maps and MY TOPO are both excellent choices. Just picked me up a Garmin GPS and plan on getting the Hunting maps for it, heard really good things about this method especially when trying to decide if the land is private or public. Cant wait to give it a try.