Search in the subject heading of Novanet for:
Did you know that Dalhousie Special Collections has a mandate to collect all Canadian small press publications, and that this collection contains many Canadian playscripts?
When searching for plays in Novanet you may find this as the shelf location
This refers to the Special Collections library on the 5th floor of the Killam. The reference librarian there will be happy to bring out the material that you are looking for. In library use only.