Congo Journey is a collection of "Photographs and Documents from Robert Hottot's Expedition to Central Africa, 1908-9."
Art That Heals: The Image as Medicine in Ethiopia is a fascinating site that discusses the role of medico-religious identities, secret names, and talismans in traditional medicine.
The Dawn of Colour commemorates the centennial of the autochrome. Here's one taken in 1913 by Mervyn Joseph Pius O'Gorman:
Tyren, Jomfruen og alle de andre comprises a collection of old star atlases (in Danish).
Teh Booxxor of Joob preachez teh LOLcat g05p3l 2 u nooblarz (via Pandagon).
Not Pop-Ups: The Other Illustrated Books, Ephemera, and Graphic Designs of Vojtech Kubašta was the source for the illustration at the top of this post.