Ed,
Thanks for your comments and for posting the report.
The report seems to help confirm that the British Cooker was not the type that was in common use in Canada at the time.
Attached is one page of the long list of items that were tested during those cold weather trials. If you follow the link you can scroll through the other pages of the document.
http://heritage.canadiana.ca/view/oo...7/2436?r=0&s=1
Colin