The Smithsonian also includes the National Museum of African Art, which is devoted to the collection, study, and exhibition of African art. The National Museum of American Art houses a collection of some 36,500 American paintings, sculpture, folk art, photographs, and graphic arts. The National Museum of American History, traces the American heritage through cultural, scientific, and technological exhibitions. The National Museum of the American Indian is located in the historic Alexander Hamilton U.S. Custom House in New York City. The National Museum of Natural History is one of the world's great centers for the study of earth history, human cultures, and the diversity of the natural world. The National Portrait Gallery presents portraits of men and women who have made significant contributions to the historical and cultural development of the United States, including the leaders of our country, prominent politicians, sports heroes, artists, writers, and scientists.
The Smithsonian's National Postal Museum traces the personal, commercial, political, and social impact of the postal service on American life and is the largest and most comprehensive collection of its kind in the world. The National Zoo is home to thousands of animals representing some 500 species, many in settings that offer insights into social behavior and ecology. The Renwick Gallery features changing exhibitions of contemporary American crafts, as well as a selection of works, from 1900 to the present, from its permanent collection. The Smithsonian Center for Earth and Planetary Studies and National Air and Space Museum contains links to servers with images of Comet Shoemaker-Levy 9 collision with Jupiter and the Space Shuttle Repository and Regional Planetary Image Facility. The Smithsonian Natural History Museum Web documents museum research and contains more than 120 million scientific specimens and cultural artifacts from around the world.
National Library of Medicine is the world's largest library dealing with a single professional topic. It offers extensive online services dealing with clinical care, toxicology and environmental health, and basic biomedical research.