the valley of Pelican Creek
Wednesday, August 23, 1871, from Albert Peale's journal: "Pelican Creek valley is quite wide where we entered it, the creek winding through it in a beautiful serpentine manner. It is full of ducks and geese, some of which were shot. Shooting at the ducks did not seem to frighten them at all. There are a number of springs along the banks, some hot and some cold. I got a specimen from one which is evidently at times a geyser." 
- "U.S. Geological Survey Photographic Library," U.S. Geological Survey Photographic Library, 1871, section goes here, accessed November 21, 2012, http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20Jackson,%20W.%20H.%20%200300
- Marlene Merrill, ed., Yellowstone and the Great West: Journals, Letters, and Images from the 1871 Hayden Expedition (Lincoln: University of Nebraska Press, 1999), pg. #168.
- Yellowstone's Photo Collection, Yellowstone National Park Archives, Yellowstone National Park, accessed February 7, 2013, http://www.nps.gov/features/yell/slidefile/index.htm.