When I am interested in an area I get two maps.
One from the BLM office. This shows what is private land and what is owned by me - the taxpayer.
The second is a USGS map of the same area. These guys keep really good records of roads and landmarks.
With those two used together I have found a lot of incredible stuff.
I've used a lot of usgs/topo maps . Many were older than I am (59).
Had to use them once we leave the coast and head up rivers such as the Yukon River.
In many cases the river course had changed over the years, elevations of hills and mountains remain constant.
Was working a job in Turnagain Arm, on the south side of Anchorage. Where I was anchored in 60 ft. of water, The map/plotter said I was on dry ground.
Local knowledge is the best............Dennis.....Alaskan
Wal-Mart generally will have them for the geographical area that the store is in. If not, talk to the Dept mgr for Sporting goods to see if they stock them or if any of the other stores in that area have them.
All levels of government have maps available for a small fee. You can generally get copies at city halls, courthouses and by mail from the state government. You can also purchase plat maps that list every farm, by owner's name, in your county by contacting your local farm bureau or farmers' cooperative.