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Dedication Year: 1972

Location: Steel's Tavern, VA, See the Shenandoah Valley Agricultural Research and Extension Center for details. 

Plaque Wording: Walnut Grove Where Cyrus Hall McCormick Invented and in 1831 Demonstrated the First Successful Reaper to Introduce the Era of Farm Mechanization is Designated an Historic Landmark of Agricultural Engineering by American Society of Agricultural Engineers. Dedicated in 1972.