In this podcast from the memoir of Ellsworth S Grant, one of the state's great historians, Walt Woodward tells us about the invention of the world's best fastening device. It's a story that begins with Archimedes, and that came to fruition because of silk worms, Cornelius Vanderbilt, an entrepreneur named Dimoch, and an Irish inventor who gave this unique tool its name. It's a story for anyone who ever put together a piece of Ikea furniture - the story of the recessed hexagonal screw and the Allen wrench