Benchmark Maps is a California Company that produces fine Atlases of Western States. Currently they have Arizona, New Mexico, Washington, Oregon, Utah, California, Nevada, Colorado, Wyoming, Idaho and just recently Montana are available. They are also the publisher of the Four Part Arizona Map.
Benchmark also produces a Recreation Map of Washington and one of Oregon.
The Atlases are shown below.
Prices are either $22.95 or $24.95 depending on the state. Call for specific price.