Jackson Hole Art Auction, Frank McCarthy, Leaving the Stronghold, oil, 18 x 24. Estimate: $18,000-$24,000. ← Previous Next → Jackson Hole Art Auction, Frank McCarthy, Leaving the Stronghold, oil, 18 x 24. Estimate: $18,000-$24,000. Jackson Hole Art Auction, Frank McCarthy, Leaving the Stronghold, oil, 18 x 24. Estimate: $18,000-$24,000.