Kenneth Riley, Canyon Walls, oil, 19 x 29. Estimate: $20,000-$30,000.

Kenneth Riley, Canyon Walls, oil, 19 x 29. Estimate: $20,000-$30,000.

Kenneth Riley, Canyon Walls, oil, 19 x 29. Estimate: $20,000-$30,000.

Kenneth Riley, Canyon Walls, oil, 19 x 29. Estimate: $20,000-$30,000.

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