I am looking for information on a business that my great grandfather, W.A.J. Simpson and his brother, Samuel Howard Simpson, ran with their father, Samuel R. Simpson. They were reknowned building contractors in the state, and also had a planing mill in Gallatin in the early 1900's. The business was 'S.R. Simpson and Sons'..I'm trying to find out anything about the business..location, any homes existing that they built, etc. Any information on the business or the Simpson family is appreciated.