Gifford Pinchot, the founding chief of the US Forest Service, had a profound impact in California and more broadly across the US west. After all, the Forest Service manages upwards of 193 million acres, many of which are located west of the Mississippi River. Yet it was California, which he visited in 1891, that rocked his perceptions of America the Beautiful.
"Gifford Pinchot's Legacy: America's Great National Forests,"
Eastern Sierra History Journal:
Vol. 1, Article 7.
Available at: https://scholarship.claremont.edu/eshj/vol1/iss1/7