On User Interface Design, Part I
http://webcast.berkeley.edu/media/common/media/be69a712-c6ec-4d80-baac-a7db5dac7516_opencast_video_itunes-wcb.mp4

Kay, Alan
Visual Literacy
1983

Abstract:

The first of a pair of presentations by Alan Kay (of Smalltalk fame). The presentation is from 1983 and discusses the development of user interface design from the 1960s onward.