Borgmann Mill - Credit: Wikimedia Commons
Borgmann Mill was a historic grist mill located near Marthasville, Warren County, Missouri. It was built between 1847 and 1850, and was a 1 1/2-story, timber frame building. The mill was powered by mule teams or oxen. At its listing it was the only "barley huller and corn grinder" constructed entirely of wood left in Missouri or the Middle West. (includes 4 photographs) Read more on Wikipedia
Source: en.wikipedia.org