Historedia
Episode 1 of 4

Cook-Folsom-Peterson Expedition

When
1869
Where
Yellowstone area
Part of
Yellowstone National Park established

First detailed expedition to Yellowstone, providing reports that influenced later preservation efforts.

In 1869, three privately funded explorers conducted the first detailed expedition to the Yellowstone area. Their reports provided the basis for organizing the subsequent Washburn-Langford-Doane Expedition in 1870.

Sources

  1. Yellowstone National Park Wikipedia, revision of 2026-10-06

Machine-drafted from the cited Wikipedia passages and checked by a reviewing model, not by a human editor. Every passage cites the revision it was written from; dates and places follow those passages.