| 1. |  | Oral History Interview with Warren Walkinshaw, 2002 | Crop dusting; Chemicals; Airplanes; Airplane equipment; Aeronautics; Pest control; | The following interview with Warren Walkinshaw took place at Argusville, North Dakota, most likely at the Walkinshaw residence, on April 10, 2002. The interview concerns the early history of agriculture... |
