Go to http://www.guidebookgallery.org/screenshots if you want to see more (also: screenshots from many other operating systems of past times).

GUIdebook sadly only goes up to 10.3 Tiger – would be really great if someone would pick up the work.

(I especially like GUIdebook’s comparisons of different system components like here: http://www.guidebookgallery.org/screenshots/splash I would argue that it’s immediately obvious which is the classy OS :)