Sure:

http://www.digibarn.com/collections/systems/apple-lisa2xl/apple_lisa_screenshot.gif

The font in question is the one on the menus and title bars.

I guess the one on the early Mac is a little different upon a second look, but here's the shot from the Folklore site:

http://www.folklore.org/StoryView.py?project=Macintosh&story=Steve,_Icon.txt&topic=MacPaint&sortOrder=Sort%20by%20Date&detail=medium

Again, the font in question is in use on menus and title bars. I think I actually prefer this one to the Lisa font, but they're both pretty neat.