Thanks for the help guys.
I'm not trying to identify a source for help thread, but instead trying to narrow down the possible sources for thread observed on a (probably Assiniboine) artifact collected in 1851. I was considering shoe thread as a possibility. The thread observed is very similar to some #10 hemp shoe thread I have on hand, but I had no idea of what size of linen thread I should also be looking at for comparative purposes, or looking for in trade records to see if it was available.