Plaque commemorating Shielded Snapping Rolls for Corn Harvesting,
displayed at the Deere and Company Des Moines works in Ankeny, Iowa
(photos courtesy of Tom Colvin).
The Shielded Snapping Roll plaque with additional explanatory material,
as displayed near the main reception desk at the Deere Des Moines Works,
825 Irvinedale Drive, Ankeny, Iowa.