Veduta prospettica del tempietto di San Pietro Montorio a Roma in
La pratica di prospettiva 1596.
Within the Institute and Museum of the History of Science's (Venice) digital exhibits is the Italian-only section entitled: Bibliotheca Perspectivae. In there are quite a number of book scans dealing with artistic/science perspective and largely dating from the Renaissance (as above). The site is a little cumbersome with frames but there are some quicktime displays and high resolution images available if you persist/search around.