What was the formula for our first national park? Take five ambitious men of Mark Twain's "Gilded Age," add western exploration and the plans for a $100M railroad, and stir continuously with politics. Then, before anything settles, add one new idea and promote vigorously. The five included a geologist, an artist, a photographer, a banker, and a frontier promoter., and although they did not know one another, they were caught up in the spinning web of history to give us our first national park--the Yellowstone!