The Library of Congress has made a collection of his images available on the internet, using a process that scans each plate and then combines them digitally to make color photographs. The results are stunning. For ease in seeing the collection, the Denver Post has an blog post on their web site about the collection and have all the images on a single web page. It's definitely worth the time to take a look at these historic photographs, and if you're interested to read the history of the photographer and the process.
- Color Photography from Russia in the Early 1900's (Denver Post)
- The Empire That Was Russia (Library of Congress), main exhibit site
- Photographer to the Tsar (Library of Congress), biography
- Making Color Images from Prokudin-Gorskii's Negatives (Library of Congress), process