I’ve just found a great photo blog.
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.
The pictures are in High Definition and some of them are amazing. This one, for example, was taken in May 1864. The full size image is a real trip to the past.