Well, Of course I know where Cosby is, but I've never heard of Boxford. And the Third Fork River bottoms must be the 3rd fork of the Platte River? If so, the farm must have been close to Hwy 31?When I was a young man I rented a farm between Boxford and Cosby on Third Fork River bottoms. The farm straddled the joint boundary between Andrew and DeKalb Counties. This County line boundary is a section of the eastern boundary of the Platte Purchase Territory. While plowing on the bottom, I unearthed several large limestone boulders. They appeared to be cut or hand hewn and were generally situated on the County line. Dad looked at them and said they were ballast rocks brought up-river and used by the 19th century survey crews to mark the County boundary.
Question for you-- You know Camp Highly (a MSM requitment camp), was just on the outskirts of Helena. The Federals had a camp too, but further east in DeKalb County. I've never heard where that camp was, but I assume it must be pretty close to your farm? It seems there was an informal agreement between the commanders of the two camps not to "bother" each other. The MSM of Camp Highly were equipped, at least partially, from the guns stolen from the Independence Armory, and they ended up going down to Lexington and taking part in that siege.