If you're lucky enough to have happened upon a stash of vintage National Geographic magazines, then you're familiar with the institution's reputation for incredible photography from far-flung locations. In honor of the journal's 125th anniversary, the National Geographic Society has just launched a Tumblr project called "Found" to share previously unpublished photos. William Bonner, who has the amazing title of "Guardian of the Collection," will be digging through the archives in D.C. and sharing rich images from the society's last century or in documenting scientific and cultural history around the globe.

Follow Found on Tumblr.