Calisphere
I found this photograph from this website some time ago when I was doing research for my Lower Owens River project. In addition to having an incredible archive of photographs, one could also do a great deal of research on so many issues that have created California as we know it today.
It is interesting to see the difference in attitudes toward the environment, and how they have changed over the last century—although most of those changes have probably been in the last 15-25 years.