Thank you for checking. I just ordered that book yesterday!
It's funny you should say that because I just thought the same thing as I was looking at the draft card of a brother of the three "Piney Wood" residents that says this at the bottom:
????? For the
County of Sheridan,
State of Montana,
His draft card was from 1918 and the "Piney Wood" obit entry was from 1933, but I think it's too much of a coincidence!
I've been puzzling over this for awhile trying to figure out where they were --especially because they are not showing up in census records after 1910 and I couldn't find a town of "Piney Wood". I'll focus on Plentywood and see if it turns up any new leads.
Thanks for your thought on this!