Here is the video recording of the February 8th webinar on the history of economic thought leading up to the Austrian school. Topics include Aristotle, the Spanish Scholastics, Cantillon, Adam Smith, the Austrians, subjective theory of value and theory of marginal utility.
Here are the powerpoint slides I used as well. They are in a .pdf format. We had a bit of trouble getting the slides to load during the webinar, so you can refer to these also.