You can find Primary Sources using the University of Toronto Library Catalogue
In the search box, type: conceptual art.
Refine under Genre (Left Hand Side)
You will be taken to a list of search results. Scroll down to Genre. Select the the primary source type you are interested in. Look for any of the following terms:
Example: Interviews
In Canada, most works pass into the public domain after fifty years following the end of the calendar year in which the author died. However, while a work may be in the public domain, a specific edition or image of the work may be under copyright.