Xerox Star User Interface http://www.youtube.com/watch?v=Cn4vC80Pv6Q http://www.youtube.com/watch?v=ODZBL80JPqw

Tektronix 4404 Smalltalk http://www.youtube.com/watch?v=8yxCJfayW-8

The Smalltalk-80 Programming System http://www.youtube.com/watch?v=JLPiMl8XUKU

The Final Demonstration of the Xerox 'Star' computer http://www.youtube.com/watch?v=_OwG_rQ_Hqw

Symbolics Hypertext Document http://www.youtube.com/watch?v=7DxYj32cvoE

Warren Teitelman work at Xerox PARC https://news.ycombinator.com/item?id=7579613

The Mesa/Cedar programming environment https://duckduckgo.com/l/?kh=-1&uddg=http%3A%2F%2Fbitsavers....

Steve Jobs internal demo of NeXTSTEP 3, http://www.youtube.com/watch?v=gveTy4EmNyk

Alan Kay on Xerox PARC work

http://www.youtube.com/watch?v=0oonXT-gYjU

http://www.youtube.com/watch?v=y43fI7Dy04A

http://www.youtube.com/watch?v=5QJTsPQQCCc