I found the news story in the Vancuver Sun.December 10, 1956.
Have made some copies -Didn't read through the news stories at the library - although J. Henderson is listed as passenger. I can send the copies to you- you have my home e mail address.
I did search the Death Notices /Obituaries for all December - with 0 results [in the Vancouver Sun]. Searched Sept 1957 - since that is when the Coroner made his report. for obits - with 0 results. It is possible that I may have missed something - or - because of the event - there was no obituary published. Perhaps someone else will help you with the search - I will follow up - as time allows.-family/friends situations have become complicated again - and need my time.