Check out the charming Shorpy.com , the “100-year-old Photo Blog."
The site says: Shorpy.com is the 100-year-old photography blog that brings our ancestors back, at least to the desktop. The site is named after Shorpy Higginbotham, a boy who worked in an Alabama coal mine near the turn of the century."
It's compelling.
(Via Peter Merholz)
ADVERTISEMENT
Another interesting website with plenty of old pictures from all around the world:
http://www.histografica.com