She sat on the council of the Save-the-Redwoods League and the Big Sur Land Trust.

John B. Dewitt, executive director of the Save-the-Redwoods League in San Francisco, estimates it to be worth no more than $100 million.

It was established by the Save-the-Redwoods League in 1921 largely from lands purchased from the Pacific Lumber Company.

Young left the bulk of her estate to the Save-the-Redwoods League.

The redwood groves all have names, which give them a human quality, an adopt-a-grove tradition begun in the 20's by the Save-the-Redwoods League.

In addition to being a Grantee to the Save-the-Redwoods League, some of Sillett's awards and acknowledgments include:

He was the first director without prior national park responsibilities, but came with strong conservationist credentials, having served as executive secretary of the Save-the-Redwoods League in California.

He was board chairman of the Save-the-Redwoods League at his death.

In addition, the Save-the-Redwoods League is undertaking a project to map the tall redwoods on California's northern coast.

The park was created in the early 1920s by action of the Save-the-Redwoods League as a sanctuary for old-growth Coast Redwood.