Since age sixteen, Bee has loaded freight for the Union Pacific Railroad, all the while dreaming of being an engineer. Bee loves the railroad: from the roar and clatter of the wheels against the track to the names likeTrue Heart, Roaring Wolf, andCoyote Specialto the low blast of the whistle--whoooo-whoooo.Then one day, Bee gets the chance to drive theTrue Heartall the way from Cheyenne to Chicago. A seamless mix of history and fiction,True Heartis a story of the American frontier, of wanting something so much you can't think of anything else--and of the little-known work of pioneer women who made the American railroad a reality.