Steven Stukenberg of Harvard shows a smithed piece of iron to Brandon Block, 8, and grandmother Judy Jellerichs during a demonstration of blacksmithing Saturday at Hammer-In at the John Deere Historic Site in Grand Detour. A new documentary, “The Best That Is In Me: Mr. John Deere's Dream,” produced by Fourth Wall Films of Moline, will use the John Deere Historic Site in Grand Detour as a backdrop.