The 1986 ACM Conference on the History of Personal Workstations

They don't have JCR Licklider's talk linked (I've added it to their Disqus comments) but it is actually available here: https://www.youtube.com/watch?v=SN--t9jXQc0

The other missing presentation, "The Augmented Knowledge Workshop" by Doug Englebart, is on archive.org: https://archive.org/details/XD302_86ACM_Prese_AugKnowledgeWo...