The Wilderness Act of 1964 in historical perspective
Signed into law by President Lyndon Johnson on 3 September 1964, the Wilderness Act defined wilderness “as an area where the earth and its community of life are untrammeled by man, where man himself is a visitor who does not remain.” It not only put 1.9 million acres under federal protection, it created an entire preservation system that today includes nearly 110 million acres across forty-four states and Puerto Rico—some 5 percent of the land in the United States.