Today was announced that Google will be hosting the 3 million images that were released from the Time-Life archives to the public. Most of these images have never been seen by the public until now. An additional 7 million photographs may be added in the next few months or years.
Note that you can also use the regular images search by adding a tag. If you wanted to search for ‘ww2′ you would go to http://images.google.com/ and type ’ww2 source:life’.