- Livre électroniqueJethro Wood, Inventor of the Modern Plow. A Brief Account of his Life, Services, and Trials, Together with Facts Subsequent to his Death, and Incident to his Great InventFrank Gilbert
- Livre électroniqueJethro Wood, Inventor of the Modern Plow. A Brief Account of his Life, Services, and Trials, Together with Facts Subsequent to his Death, and Incident to his Great InventFrank Gilbert