I like maptrails.com, as they not only have good maps, but also CD-ROMs and chips to put right into the newer GPS equipment.  I have a CD ROM of Wyoming that is invaluable and actually even saved me from getting a trespassing ticket because of the good map I had made from it.  It was sort of ironic because I had bought it from the Wyoming G&F that were the ones prepared to write the ticket until I showed them my map with coorrdinates on it showing that I was on legal BLM land!!!

Maps? What are they? I can't ever remember carrying a map while hunting mule deer, elk, mountain goats or moose.  I might have had a map on some bighorn sheep hunts if I was hunting near the unit boundary or next to Yellowstone Park.

I do have Road Atlas's for Montana, Wyoming, Utah, and Colorado that I keep in my pickup.

As for hunting in eastern Montana or Wyoming for antelope a land ownership map can be your best friend.  Not all public land is identified on the ground, and some landowners have been known to post public roads going through public land.

All of our antelope hunting is done on public or Block Management land and when we sign up for the Block Management areas, the Fish, Wildlife & Parks have handout maps showing the roads and land ownership.  I do carry one of those maps.

Topgun wrote that a GPS saved him from a trespassing ticket.  Last year while antelope hunting in eastern Montana, one of my hunting partners had a very accurate GPS unit.  It had the land ownership and even the names of the larger landowners.  We used that GPS to locate a herd of antelope on a half section of State land that was unmarked and surrounded on 3 sides by private land.  I was able to guide one of my other partners to a nice buck there.

exbioligist,Are you talking about the roads & recreation atlas?Thanks