National Geographic Yellowstone and Grand Teton National Parks Road Guide : The Essential Guide for Motorists

As with each major road, the "Grand Loop Road" includes several pages of maps with accompanying text.

The text describes the formation of the 308 foot Lower Falls, points out Yellowstone Canyon's best viewpoint Artist's Point, and tells how Mud Volcano lives up to its name.

The book's design eliminates a major frustration of other road guides - having to count odometer mileage and flip back and forth between maps and text.

Here the text and maps are contiguous, all the visitor needs to find is the road and starting point.

They can then follow the maps and descriptions as they drive along.