Old Faithful Geyser, Yellowstone national park
Genuine Curteigh-Chicago "C.T. Art-Colortone" Post Card
Old Faithful Geyser erupts every 66.3 minutes on the average, to heights of from 116 to 171 feet, for a period of four minutes. This is the most celebrated picture of this famous geyser, which was named in 1870 by General Henry D. Washburn.