Idaho is now seen as one of the most intriguing and attractive states in the Union. Any view of the Gem State is likely to be broadened and deepened by this superbly written history of it, In Mountain Shadows. Carlos A. Schwantes illustrates the extent to which Idahoans have always been divided by geography, transportation patterns, religion, and history. Although the state motto should have been "Divided We Stand," as he says in affectionate...