It's funny what you remember sometimes. When I was growing up, I used to watch Little House on the Prairie. I actually used to enjoy that show sometimes. Anyway, I remember one episode when they were talking about the Grange.
The Grange was active in regulating the railroads and grain warehouses in getting fair prices for farmers. It was also active in getting rural mail service. They also were responsible for the direct election of Senators and the woman's vote.