I remembered ... it's called the Maple Leaf Legacy Project!

I entered your Great Uncle's name and this is what came up. I wonder if you contact them if they have a photograph of the grave for you? They will send you a copy, I'm sure, if they do They sent me one of my Uncle's grave, long ago.

http://www.mapleleaflegacy.org/grave_page.asp?id=53801

Karmen