Get yourself a Forest Service map. You can buy them at Ranger Stations. If you have a GPS, use the national forest service layered maps. The wilderness boundaries are shown on those. I use the Gaia GPS app for my iPhone. All of the topo, satellite, and forest service maps are free. Great offline use with that app as well. It will outperform every handheld GPS I have ever seen. Boundaries, trails and everything else you could ever want to see on a map are there.
Make sure you get something to show you the boundaries. You don't want to be hunting accidentally in a none wilderness area. Those boundaries change direction and it would be very easy to wander outside of them when trekking through the bush off trail.