At the turn of the last century, close to half of all Americans lived in rural areas. Over the last 100 years, though, the number of farmers has dropped so low that by 1993, the U.S. Census stopped counting the number of people living on farms. Lee Klancher is one Minnesotan who mourns the loss of the country's rural communities. His latest book, Tractor in the Pasture, showcases the remnants of a dying lifestyle.