April 1952 (age 53)

Nothing to report.

April 1967 (age 68)

A busy month, including trips to California, Arizona, and Washington, D.C. In California, Sierra Club President Edgar Wayburn, calling Sigurd "the personification of the wilderness defender," presented him with the Sierra Club's highest honor, the John Muir award. In Arizona with the Wilderness Society's Governing Council (Sigurd was the organization's vice president), Sigurd helped the group face the fact that its successful campaign to create a national wilderness preservation system was about to make things financially tougher than ever, for now the Wilderness Society had to keep up with and stay ahead of the federal government in investigating millions of acres around the country for potential classification as wilderness areas. In Washington, National Park Service Director George Hartzog appointed Sigurd to the master planning team for Yellowstone and Grand Teton National Parks. Meanwhile, he found the time to complete a first draft of his book Open Horizons.