Dayton O. Hyde, founder of the 11,000 acre Black Hills Wild Horse Sanctuary, died 12/22/18 at the family ranch in Oregon. He was 93. Refer to this story posted 12/30/18 by the Herald and News of Klamath Falls.
The sanctuary was in the news recently because of a conservation easement that affects over 70% its land. It will continue operations under the leadership of Susan Watt.
UPDATE: Added video by Black Hills Wild Horse Sanctuary.
Western Horse Watchers Association 