Jackson Hole Land Trust is a private, non-profit organization established in 1980 that works to preserve open space and the scenic, ranching, and wildlife values of Jackson Hole, Wyoming by assisting landowners who wish to protect their land in perpetuity

The Jackson Hole Land Trust is comprised of three departments:
-the Protection department works with willing landowners to protect important conservation values on their property.
-the Development department coordinates fundraising, communications and public education/outreach.
-the Stewardship department is responsible for perpetual monitoring and ecological enhancement of owned land and conservation easement-protected properties.

Harrison owns an 800-acre (3.2-km²) ranch in Jackson Hole, approximately half of which he has donated as a nature reserve to JH Land Trust

Related links:
Official site