Z.S. Liang, Friendly Finish to Trading, Upper Missouri River, 1808, oil, 44 x 62. ← Previous Next → Z.S. Liang, Friendly Finish to Trading, Upper Missouri River, 1808, oil, 44 x 62. Z.S. Liang, Friendly Finish to Trading, Upper Missouri River, 1808, oil, 44 x 62.