Archives Subject Guides
Subject guides are lists of some of our most requested topics and the collections and boxes that are most relevant. There are also inventories of our special format collections such as films, oral histories, and maps.
Using the Archives
Did You Know?
Yellowstone contains approximately one-half of the world’s hydrothermal features. There are over 10,000 hydrothermal features, including over 300 geysers, in the park.