ملف:Turtle Island - Gary Snyder.jpg

No permission is required because the dust jacket was first published prior to 1978 without a valid copyright notice. Turtle Island was first published in 1974. The hardcover book itself carried a copyright notice, and its contents remain copyrighted. However, the first-edition dust jacket did not carry a separate copyright notice. According to The Compendium of U.S. Copyright Office Practices: Chapter 2200, § 2207.1(C) at p. 15:

"A notice of copyright on the dust jacket of a book is not an acceptable notice for the book, because the dust jacket is not permanently attached to the book. Likewise, a notice appearing in a book is not an acceptable notice for the dust jacket or any material appearing on that dust jacket, even if the book refers to the jacket or material appearing on the jacket."

To verify the lack of a copyright notice, high-resolution photos of other parts of the same edition's dust jacket can be seen at a listing to sell the book at Worthpoint (direct link to full-jacket jpg).