http://youtu.be/TDBbVSwBp7o
The author fired up her old PET recently, to make this video.

I have the one titled, "Anatomy of a Microcomputer - Commodore PET". The scan is so-so, but attachments seem to be disabled on this board. My first try with the Flip Pal panorama software, which reduces resolution of such stitches. Here's a stitched, low res version of the PET poster - attachments ...