The Colorado Guide is one of the shining accomplishments of the Federal Writers, who were recruited by the WPA in the days of the great depression to record the dynamic story of their State. So fruitful were their door-to-door inquiries that the public has acclaimed their labors and called for their book ever since. In the last few years it has become evident that the state was outgrowing its guide. The spectacular facts of history remained unaltered, but practically everything else burst its seams. The cities pushed beyond their limits the colleges were jammed with youth; the hard-surfaced roads unlocked remote natural wonder; the rushing rivers created dozens of new lakes; even the snowclad mountains yielded to airlift. A thorough revision was called for--and here it is.^