Black and white reproduction of an early drawing schematic for the F.S. Baldwin Calculating-Machine. Text on image indicates that the Calculating-Machine was patented on Feb. 2, 1875. Other text: "4 Sheets--Sheet 1." and "No. 159,244." and "FIG. 3." Baldwin signed the drawing on the bottom right. Two witness signatures are visible on bottom left. #19 is written in pencil on verso side.