The Perin & Gaff Mfg. Co. Susan R. Knox Patent Crank Fluting Iron
A Victorian laundry machine that connects a woman inventor in New York to a Cincinnati foundry — manufactured under the 1866 patent of Susan R. Knox by Perin & Gaff of Cincinnati, with comparable examples in the Smithsonian's permanent collection.
Browne’s Patent Cast Iron Broom Head
A Cincinnati inventor's patented broom head from the first autumn after the Civil War — carrying his name and the exact date of his patent grant cast into the iron, five months after Appomattox.