When I see the name Carnegie, I think of the libraries that that family funded in the US not the steel industry where their money was made. When I think of the Rockefeller family, I think of politics.
But here in the Grand Teton National Park, the "Jackson Hole" (hole=valley) was for the most part acquired by Laurance S. Rockefeller to give to the government as a national park and wildlife preserve. (That fact that he had a tough time getting the government to accept this is another story.) Ultimately, these 30,000 acres were melded into the national park.
A little bit of research on this conservationist, I found that he also made land donations to Acadia, Great Smoky Mountains, Yosemite, and Shenandoah National Parks. As well as the Humboldt Redwoods State Park in California.
