RICHMOND – Several impeccably restored tractors, including a rare model, lined 110 E. Main St. for the Richmond Mushroom Festival Tractor Show, sponsored May 7 by Ag-Power of Richmond. Scott Homfeld, Lexington, brought a 1919 Waterloo Boy Model N tractor to the show. “It’s a predecessor to John Deere,” Homfeld said while climbing up to the driver’s seat to sit for a photo. “Deere bought that company out in 1918 and this is their first production.” Deere entered the tractor-selling business by purchasing the Waterloo Gasoline Engine Co. in 1918, the same year World War I concluded. A few years later, in 1922, Deere dropped the Waterloo Boy name from the mostly kerosine-powered, two-cylinder, watercooled tractor. “There’s only 200 of these left,” Homfeld said after climbing down from the tractor. Of those 200, good luck finding one in the restored shape of Homfeld’s Waterloo Boy. “I’ve collected tractors since I was a kid,” he said, and he had set his sights on adding a Waterloo Boy to…