Good advise on here. Also, when you are looking at units and there is an asteric its because pubic land is limited or inaccessible. Also, when looking at maps with public land, if the topo lines show anything but rolling land with occasional high spots then the land may not be pronghorn habitat.
You will get more info on here if its pretty obvious you've done some homework. Use the search option and it will show past threads that will likely yield the info you want. Also, game and fish will put you on the right track or sometimes hand you answers on a silver platter, give them a call. After you narrow it down give the regional office a call as well. Also gae wardens are a great source of info. As mentioned, good info on those links.