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F-45= Down inside the grand canyon of the Yellowstone river C.W. Cushman

1. F-45= Down inside the grand canyon of the Yellowstone river C.W. Cushman

F-2= A small terrace at Mammoth Hot Springs Yellowstone C.W. Cushman

2. F-2= A small terrace at Mammoth Hot Springs Yellowstone C.W. Cushman

D-42= west bank of Columbia river from Hwy bridge in Central Washington

3. D-42= west bank of Columbia river from Hwy bridge in Central Washington