Sybil Hutchinson research query

[Kathy Kit Chung]

I am trying to find some information about and to locate a Sybil
Hutchinson (1907 - ?).  Hutchinson was a student of Earle Birney at UBC
in the 1920s/30s and she was Editor-in-Chief of McClelland and Stewart
in Toronto in the 1940s.  The last bit of information I have on her is that
she was publishing plays in Toronto at some time.
 
I would be very grateful if anyone had any information pertaining to
Sybil Hutchinson, her dates, whereabouts, papers, etc. to share.  My query
is in relation to research work on the letters of Malcolm Lowry,
author of _Under the Volcano_ (1947).  Lowry corresponded with Hutchinson
and I am attempting to locate any extant Lowry letters.  Any suggestions
of other bulletin boards to contact on this matter would also be
gratefully accepted.
 
Thanks!!!
 
Kathy Chung
kychung at unixg.ubc.ca
University of British Columbia, Vancouver