Slide of 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. Small label with 59 on bottom edge next to number 17-1 in black pen. Top of slide, handwritten "Baldwin draw 3 pc."
