I have recently purchased the book, The History of Stevens County and Its People. It has no index, so searching through it for your family may take a little time but I would be willing to for those of you who need an extra boost. I'm no expert on Stevens Co. but am pretty familiar with the book and the names which are in it.
For any Webber, Carlisle, Farmer, Wenzel, Harrington, Floyd, Ausbun researchers: I am a family member!!
My email is firstname.lastname@example.org
and I live very near Stevens County also.