On this site in 1837 John Deere built the first successful self-scouring steel plow, thereby making a significant contribution to the development of American agriculture. Dedicated by American Society of Agricultural Engineers 1976
Innovation designated by: 
Courtesy Flickr/Dwight Sipler (CC BY 2.0)
moldboards of a modern plow
Address:
The John Deere Historic Site
8334 S. Clinton Street
Grand Detour, IL, USA
