Images

Visitors observing Beryl Spring from the side of the road in 1923, prior to the construction that breached its sinter cap and altered the spring’s characteristics. From the National Park Service archives, retrieved by M.A. Bellingham.

Early visitors at Handkerchief Pool, Black Sand Basin, around 1923.

Old Faithful Inn, swimming pool, and store, with Beehive Geyser in the foreground, in 1921.

The Fountain Hotel with Leather Pool in the foreground and the hot water pipe visible in the meadow. Photo by JP Clum Lantern. Date unknown. Public domain in YELL photo archives (https://www.nps.gov/features/yell/slidefile/history/1872_1918/structures/Page.htm).

Photo of Dr. Hermon Schlundt and a park ranger sampling a pool in Norris Geyser Basin for radium. The description of the photo states that this was the site where the radioactive element thorium was first discovered in the United States. Plate IIIB from Schlundt and Moore, 1909 (USGS Bulletin 395).

Historic colorized photograph of Old Faithful geyser and Old Faithful Inn. Originally, the shingle roofing of the Old Faithful Inn was painted red with a material thought to be a fire retardant. Today, the shingles have a natural wood finish.

Old Faithful geyser in eruption at Yellowstone National Park's Upper Geyser Basin.

Silica sinter (an amorphous form of silicon dioxide) forms from the waters that flow from hot springs near Shoshone Lake, Yellowstone National Park. USGS photograph by Jake Lowenstern.

Guardian Geyser and Norris Geyser Basin, Yellowstone National Park.

Scientist collects a sample of gas in a vacuum sealed glass bottle near Nymph Lake, Yellowstone National Park.

Mammoth Hot Springs at Yellowstone National Park, Wyoming.

Summer geology intern Mindy Juergenson climbs over downed lodgepole pine trees killed in the fire of 1988 as she packs a GPS station out of the field (inset). Nine temporary stations are deployed each April/May and retrieved in October/November. The temporary stations supplement a network of permanent stations that record ground deformation data year-round.

Locations (Lat, Long, Depth) of January 17, 2010, earthquake swarm on Madison Plateau, Yellowstone National Park.

Top panel shows a continuous GPS station located in Yellowstone National Park. The antenna is secured to the ground by several metal poles, and a nearby set of solar panels provides power to the station. Lower panel shows a semipermanent GPS station, with a small solar array for power and an antenna located close to the ground.

Newspaper clipping from the Billings Weekly Gazette, December 21, 1900, detailing possible reasons for the disappearance of Leroy R. Piper on July 30, 1900 (source: https://www.newspapers.com/clip/20351311/lr-piper-still-missing-relatives-of/).

The Buffalo Soldiers of the 25th Infantry Regiment Bicycle Corps pose on Minerva Terrace, Mammoth Hot Springs, Yellowstone National Park. Pvt. John Findley, front left, was the primary bicycle mechanic for the unit, and so carried a heavy toolbox attached to his handlebars.  Photo by F.

The Buffalo Soldiers of the 25th Infantry Regiment Bicycle Corps walk their cycles up Minerva Terrace, Mammoth Hot Springs, Yellowstone National Park. Photo by F. Jay Haynes, 1896.  Montana Historical Society Research Center, Haynes Foundation Photograph Collection, H-3615. Used with permission from the Montana Historical Society.

The Buffalo Soldiers of the 25th Infantry Regiment Bicycle Corps ride on an inactive portion of Minerva Terrace, Mammoth Hot Springs, Yellowstone National Park. Photo by F. Jay Haynes, 1896.  Montana Historical Society Research Center, Haynes Foundation Photograph Collection, H-3616. Used with permission from the Montana Historical Society.

Sapphire Pool in Biscuit Basin, Yellowstone National Park, photographed by Frank Jay Haynes in about 1887. Bulbous-shaped geyserite knobs surrounding the pool reminded the photographer of biscuits. Haynes was the official Yellowstone National Park photographer at the time.  

Geological map of Yellowstone National Park based on work by William Henry Holmes in 1878 as part of Ferdinand Vandeveer Hayden’s United States Geological and Geographical Survey of the Territories, with topography mapped by Henry Gannett and triangulation by Allen David Wilson.  From the Twelfth Annual Re

Photo of Hinmatóowyalahtq̓it (Chief Joseph) taken in November 1877 by O.S. Goff in Bismarck.  From Wikipedia (https://commons.wikimedia.org/wiki/File:Chief_Joseph-1877.jpg).