Tom Lovell, Sundown at Fort Union, oil on canvas, 23 7/8 x 36 1/8. Estimate: $150,000-$250,000.

Tom Lovell, Sundown at Fort Union, oil on canvas, 23 7/8 x 36 1/8. Estimate: $150,000-$250,000.

Tom Lovell, Sundown at Fort Union, oil on canvas, 23 7/8 x 36 1/8. Estimate: $150,000-$250,000.

Tom Lovell, Sundown at Fort Union, oil on canvas, 23 7/8 x 36 1/8. Estimate: $150,000-$250,000.

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