Hany Farid is a Professor of Computer Science in Dartmouth provides a great archive of photoshopped pictures from the late 1800s to now.

He is leading the Image Science Group whose research focuses on digital forensics, image analysis, computer vision, and human perception.

So everybody here knows about how to photoshop, it is very interesting what they also did years before computers!

One have to be aware of what is possible today, I think!

via boingboing