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Crater of Mud Volcano, Yellowstone Park
"A paint pot about thirty feet in size emitting frequent bursts of steam; but since 1898 has had no violent eruption. In 1870 N.P. Langford
Haynes (Photographer), Special Collections/University Archives (Publisher)
1927
Gatun Spillway
General view from East Wall North of Bridge, Nov.27, 1912
Handy (Photographer), Hallen (Photographer), Special Collections/University Archives (Publisher)
1912
Gatun Lower Locks
Looking south showing completed guide walls, ocean water against south gates, June 20, 1913.
Handy (Photographer), Hallen (Photographer), Special Collections/University Archives (Publisher)
1913