Jean-Philippe Cool offered me the following photo, having seen it featured on my website; it has "Eastern Canada Stevedoring Co Ltd, Montreal" titles.
"My grandfather had this picture up by his bar for the longest time, he always told me how much fun he had flying in the "corporate airplane". He did some trips to Las Vegas in it if I'm not mistaken. This exact airplane is pictured in your website CF-EFS, 9th down the page. I thought you might appreciate an original picture. It was taken in 1961, the pilot at the time was Capt. Jack Scott."
Actually, there were 2 Convairs registered CF-ECS; this matter was raised on my page Photos by Friends & Guests (28)