Three account books and three day books (1807-1886) document the farm of Benjamin Brown and his son. Brown was a farmer in Brooklyn, Connecticut. The first two account books show settled accounts signed by Benjamin. The third, dated 1843-1845), was kept jointly by father and son. The three day books may have been kept by Benjamin Brown, if he lived to a very old age, or they may have been kept by his son. Brown's account and day books represent an economic exchange system based on credit. Brown exchanged goods and labor but very little cash with members of his community. The primary source of Brown's trade was dairy products, but he also provided potatoes, grain, apples, wood and livestock.