Apple has the name of having the first graphical user interface that comes with a mouse and in the artical "The PC at the cross-roads" nice pictures of the Lisa show that innovative machine. Although the artical does not offer a complete history (it wasn't the intention of that article), it amazes me that people often forget who invented the graphical user interface and mouse. It would be nice if the articles showed a picture of the Xerox Alto from the seventees. Not a real PC, because it was more a research project than a commercial success, but it set the standard. Also its price tag was a bit high ($32,000). However, if you are interested try the following link:
http://members.fortunecity.com/pcmuseum/alto.html
Too bad that there are not many screen shots left to use it for a skin
