X0293 How Did Percy Douglas lose his leg

Some time ago I posted aboux X00293 raising the question of how did Percy Douglas lose his leg. In the post I mentioned that the next steps would be to look for obituaries to see if any of them mentioned anything

I did manage to find obituaries for Percy Douglas in both the Owen Sound newspapers:

And the Kalamazoo newspapers:

Unfortunately, neither of them had anything to say about losing a leg. I have not been able to find any news articles or documents that say anything about a lost leg, other than the draft registration card. This one remains a mystery.