Abeer Saha sits down with us at the American History Museum in Washington D.C. He’s a curator of engineering and agriculture. Saha's job is to put together exhibits, collect objects, and do research. He says less than 1 percent of artifacts curators collect are put on display… but today, three tractors made the cut and are in an exhibit along with some other agriculture technology. Saha explains that what might be common for you on the farm, like a GPS in your tractor or an irrigation system, is something the Smithsonian and its patrons take interest in. It gets put on display for an international audience. The National Museum of American History got roughly 2.1 million visitors last year.