Another bacdly marked DO - what is it?

When I got a Lodge waffle iron and a Wagner griddle at a local auction, I also ended up with a Dutch oven in the same box of iron:
The only markings on this DO are on the bottom:
I would like to know if anyone can tell me who manufactured this DO. I suspect that the 1036 on the bottom may be the month and year of manufacture.
I have tried to get a lid for the pot locally, but it appears the Cast Iron guy at the Sagle, ID flea market no longer goes there. If I can determine who made the DO, I might be able to get a lid for it. It's in great shape and I'd like to use it.
Mike
Hayden Lake, ID

The only markings on this DO are on the bottom:

I would like to know if anyone can tell me who manufactured this DO. I suspect that the 1036 on the bottom may be the month and year of manufacture.
I have tried to get a lid for the pot locally, but it appears the Cast Iron guy at the Sagle, ID flea market no longer goes there. If I can determine who made the DO, I might be able to get a lid for it. It's in great shape and I'd like to use it.
Mike
Hayden Lake, ID