1973
The entry in the York University
Daily Bulletin from March 23-25, 1971, likely relates to a Max Neuhaus sound installation, specifically one from his "Water Whistle" series.
During this period (1971-1974), Neuhaus was creating site-specific "underwater aural topographies" in university and public swimming pools across North America, including locations in the US and Canada. The Daily Bulletin would have announced or documented such an event or exhibition at the university.