Robert Silverberg

Discusses, among other topics relating to the redwood and the giant sequoia, their discovery and misuse and the chronic conflict between redwood lumbermen and conservationists.

The Masks of Time is a science fiction novel by American authorRobert Silverberg, first published in 1968. It was a nominee for the Nebula Award in 1968. It was published in the United Kingdom under the title Vornan-19.