The Library of Congress has a huge collection of turn of the century autochromes, but my favorites right now might be the ones taken in California by photographer Arnold Genthe.  When I went to California last year I remember driving along the coast and passing Carmel-by-the-Sea.  It was located in what might have been the prettiest part of our Highway 1 drive, and if we weren't in such a hurry I think I would have tried to stop there.  Seeing these photos makes me wish I had.

In the early 1900s Arnold Genthe moved to Carmel to take advantage of its local arts colony.  Supposedly the place was full of writers (Jack London and Sinclair Lewis both lived there for a time) and dancers and artists who moved there after the San Francisco Earthquake.  While in Carmel Genthe experimented with color photography and produced lots of autochromes, many of which can be found on the Library of Congress' website.  They are dreamy and soft-focused and good.  And they do make me want to take another Highway 1 roadtrip.