Howard Terpning, Good Medicine, oil on canvas, 18 x 24. Estimate: $100,000-$150,000. ← Previous Howard Terpning, Good Medicine, oil on canvas, 18 x 24. Estimate: $100,000-$150,000. Howard Terpning, Good Medicine, oil on canvas, 18 x 24. Estimate: $100,000-$150,000.