I have info which may assist you,
I needed papers on a person that died while in Essondale...as well as a person who was there for some time and then released...
I was most impressed in what they copied and sent back to me.
The papers of most patients can be ordered ( with cost ) and well worth the money.
Att" Mac Culham
Royal BC Museum Corporation
675 Belleville Street
Good Luck...and it will be interesting to hear that you were successful.