Ethan Johnson, a Chicago-based computer and video game historian, recently released the sixth episode in his Play History series, which chronicles the origins of video gaming all the way back to the 1940s. In this most recent episode, Johnson looks at the development of the first dedicated computer monitors in the 1970s and the pioneering work done at two organizations, Xerox PARC and the Stanford Research Institute, which should be familiar to any viewer of early Computer Chronicles episodes.