Joseph Russell Smith, The Curtis Club in the Yellowstone Park (1909)
“ Curtis called to his party just before sunrise to get up and see Old Faithful, the greatest geyser of them all, throw its stream of water into the air as high as a fourteen-story skyscraper while the morning sunrise on the enormous clouds of steam made reds and greens and all the colors of the rainbow, and the rainbow itself. "How did you know when to call us, Dr. Curtis?" "Old Faithful works on schedule time, every sixty-three minutes, night and day, summer and winter. It's very handy for travellers." ”
