I just came across this interesting project:
Photoshare is a service of The INFO Project helping international non-profits communicate health and development issues through photography. We welcome you to browse the Photoshare collection, request images for non-profit educational use, and learn more about development photography. Our online photo database currently contains more than 15,000 cataloged images shared by colleagues around the world for documentary use.Photoshare is supported by USAID and The INFO Project is a Johns Hopkins School of Public Health initiative. The photo above is the 1st place winner from the (2007) 5th annual photoshare photo contest.