Tamsen Ann Ziff

The American Museum of Natural History is a scientific and cultural institution. Its exhibitions and scientific collections, which serve as a field guide to the people and present a panorama of the world's cultures. The company was founded by Albert Smith Bickmore, William E. Dodge, Jr., Theodore Roosevelt, Sr., Joseph Choate and J. Pierpont Morgan on April 6, 1869 and is headquartered in New York, NY.

Conservation International Foundation operates and supports environmental conservation services. It promotes sustainable care for the nature. Through science, policy and field work, they're applying solutions to protect the natural resources. It helps communities, countries and societies protect tropical forests, grasslands, rivers, wetlands, lakes and the sea. The company was founded in 1987 and is headquartered in Arlington, VA.

The Smile Train provides cleft surgery. The company was founded by Charles B. Wang and Ed Goren in 1999 and is headquartered in New York, NY.

Founded in 1992, Ziff Brothers Investments LLC is a hedge fund manager located in New York City. The firm is the primary investment vehicle of the Ziff family, founders of Ziff-Davis Publishing.