In 1964 the Wilderness Act was passed to preserve entire, self-regulating ecosystems.

It was established and governed under the Wilderness Act of 1964.

It took nine years and 65 rewrites before the Wilderness Act was finally passed in 1964.

The 1964 Wilderness Act enlarged the system of federally protected wild areas.

It becomes a place where, in the words of the Wilderness Act, "man himself is a visitor."

Nonetheless, he became involved with conservation causes and was an advocate for the Wilderness Act of 1964.

In 1964, Church was the floor sponsor of the national Wilderness Act.

The Wilderness Act is of special importance, its language almost spiritual in content and cadence.

The Wilderness Act of 1964 passed the House by 373 to 1.

It was established in 1984 under the Wilderness Act of 1964.