A repository of lectures given at Kalamazoo, Leeds, and elsewhere that have not been published but may be of interest to AVISTA members:
- Opus Magnum – The Great Restoration of Notre-Dame Cathedral in Paris Sunday, 8 May 2022
- An Introduction to the Mechanical Arts in the Middle Ages Wednesday, 21 May 2014
- Scholastic Interpretations of Architectural Dynamics Tuesday, 21 May 2013
- Viollet-le-Duc and Villard de Honnecourt Tuesday, 21 May 2013
- Villard de Honnecourt: Dilettante or Architect? Tuesday, 21 May 2013