Gilbert M. Grosvenor

The National Geographic Society, Inc. operates as a non-profit scientific and educational institution. Its interests include geography, archeology and natural science, and the promotion of environmental and historical conservation. The company was founded in 1888 and is headquartered in Washington, DC.

Chevy Chase Trust Co. (CCTC) is a SEC-registered investment advisor headquartered in Bethesda, Maryland. The firm was founded in 1997 and is a subsidiary of Chevy Chase Trust Holdings LLC, ultimately owned by Chevy Chase Holdings LLC. CCTC primarily provides investment management services to high net-worth individuals, but also offers personal trust services, wealth family services, financial planning services, institutional custody services, and for qualifying entities, participation in collective investment funds.

Ethyl Corp. provides blending and supply solutions. The firm supplies gasoline performance additives and diesel cetane improvers. It also offers terminal, storage, and trans loading services. The company was founded on February 15, 1887 and is headquartered in Richmond, VA.

B.F. Saul Real Estate Investment Trust operates as the savings and loan holding company. It offers financial services, including securities brokerage and insurance products; investment products; and provides fiduciary services to institutional customers and high net worth customers. The company was founded in 1964 and is headquartered in Bethesda, MD.

The Conservation Fund engages in the protection of America's landscapes & waterways. It offers identifying, negotiating and financing land purchases. The company was founded by Patrick Noonan and Richard Erdmann in 1985 and is headquartered in Arlington, VA.

National Geographic Society Education Foundation operates as a non-profit scientific and educational institution. Its interests include geography, archeology and natural science, and the promotion of environmental and historical conservation. The company is headquartered in Washington, DC.