Inside Yellowstone - Hayden Valley
Yellowstone National Park, Its Exploration and Establishment - Hayden and Barlow Parties
Washburn and Hayden Expeditions
Past Climatic Patterns - Official Park Website
Ferdinand Vandeveer Hayden - Wikipedia
Thomas (Yellowstone) Moran - National Gallery of Art
Thomas Moran - Wikepedia
Thomas Moran - American Visionaries - National Park Service Website
Thomas Moran - Yellowstone Artwork - National Park Service Website
Thomas Moran's Diary - Official Park Website
William Henry Jackson - Wikipedia
William Henry Jackson Photos - National Park Service Website
Did You Know?
There were no wolves in Yellowstone in 1994. The wolves that were reintroduced in 1995 and 1996 thrived and there are now over 300 of their descendents living in the Greater Yellowstone Area.