Porter, Dot2023-05-232017-11-012017-10-012017-11-01https://repository.upenn.edu/handle/20.500.14332/46940http://hdl.library.upenn.edu/1017/d/medren/9948565193503681youtubeMedieval StudiesPenn Library's LJS 251 - Ars artium (Video Orientation)Media