Ray Swanson, Arvena and Her Herd, oil, 49 x 30. Estimate: $20,000-$30,000. ← Previous Next → Ray Swanson, Arvena and Her Herd, oil, 49 x 30. Estimate: $20,000-$30,000. Ray Swanson, Arvena and Her Herd, oil, 49 x 30. Estimate: $20,000-$30,000.