Through a friend I found this blog:
This is a blog by National Geographic of images found from their archives.
“FOUND is a curated collection of photography from the National Geographic archives. In honor of our 125th anniversary, we are showcasing photographs that reveal cultures and moments of the past. Many of these photos have never been published and are rarely seen by the public.
We hope to bring new life to these images by sharing them with audiences far and wide. Their beauty has been lost to the outside world for years and many of the images are missing their original date or location. “
Some of the images are really amazing, and they post new ones on a regular basis. Love it! National Geographic FOUND photoblog