when did yellowstone become the first national park
By Robert McNamara. The First National Park, not only in the United States but anywhere in the world, was Yellowstone, which the US Congress and President Ulysses S. Grant designated in 1872.n the winter of 1871-72 Congress, energized by Hayden's report, which included photographs taken by William Henry Jackson, took up the issue of preserving Yellowstone. And on March 1, 1872, President Ulysses S. Grant signed into law the act declaring the region as the nationâs first National Park.