While I was bringing back up the DeCou lantern slides, I thought I should also provide this link to the Kamei collection at the University of Tokyo of Giovanni Piranesi's phenomenal etchings of Rome, done in the mid to late 1700s.

Piranesi (along with Vasi) was a master of depth perception and his techniques are still taught in many architectural courses. The University of Tokyo was given the published volumes of his etchings in the 1800s. They have now digitized most, if not all of these.

What makes these very interesting is the sheer detail that Piranesi and Vasi did. Plus, it gives you a great idea of what the tourist spots really looked like in the 18th century. While I don't have a direct link to the Vasi etchings, they are easily located on the internet. What makes these interesting is that Vasi would do essentially the same location, at the same time as Piranesi, but Vasi's work always seemed to be a bit more "sanitized", where Piranesi showed the squalor and trash.

Use the map and click on a link to view a specific area. In addition, back in the 1970s, the University did a series of photographs that were shot from the same angle that Piranesi did his drawings.

http://www.coe.l.u-tokyo.ac.jp:8080/....html&-FindAll

Have Fun, --this will cause you to waste a bunch of hours

dave