Smyth Improved No. 3 Book Sewing Machine
Smyth #3 sewing machine was the first production book sewing machine. Using a machine like this an operator could sew 2000 books per day as compared to a maximum of 200 books per day that could have been sewed by hand prior to the availability of the Smyth #3. Perhaps 3 are known, 2 of which operate.