The document provides a history of national forests in the United States from the 1800s to present. It discusses key eras including the establishment of the Forest Service in 1891, a custodial era focused on timber from 1911-1945, increased timber demand post-WWII, and more recent shifts toward ecosystem management and reduced timber harvesting in the Northwest in response to species protection laws. The summary highlights the transition of national forest policy and management over time.