Finding aids (91) Images (79) Electronic resource (1)

Archival materials (102) Collection descriptions (91) Photographs (44) Lantern slides (24) Scrapbooks (17) Correspondence (15) Drawings (13) Slides (photographs) (13) Diaries (12) Black-and-white photographs (11) Clippings (11) Manuscripts (10) Negatives (10) Sketches (9) Sound recordings (8) Articles (7) Stereographs (7) Books (6) Glass negatives (6) Photographic prints (6) Blueprints (5) Motion pictures (visual works) (5) Notebooks (5) Notes (5) Plans (drawings) (5) Advertisements (4) Brochures (4) Business records (4) Color slides (4) Newsletters (4) Postcards (4)

Gardens (22) Art (11) Architecture (6) Archaeology (5) Painters (5) Sculptors (5) advertising (5) Aeronautics (4) Art, American (4) Artists' studios (4) Bridges (4) Museums (4) Anthropology (3) Authors (3) Engineering (3) Ethnology (3) Excavations (Archaeology) (3) Gardening (3) Mural painting and decoration (3) Photographers (3) Railroads (3) Abbasids (2) Aeronautics, Military (2) Ancient Near Eastern Art (2) Antiquities (2) Architects (2) Architectural drawing (2) Art historians (2) Art of the Islamic World (2) City planning (2) Civil engineering (2)

Garden Club of America (11) Greene, Isabelle Clara, 1934- (4) Lewis & Valentine Company (4) du Pont, Pierre S. (4) American Federation of Arts (3) American Society of Landscape Architects (3) Burnaby, Frank (3) Harvard University (3) Henri, Robert (3) Herzfeld, Ernst (3) National Museum of American History (U.S.). Division of Mechanical and Civil Engineering (3) Olmsted Brothers (3) Shipman, Ellen (3) Underwood & Underwood (3) Architectural League of New York (2) Bertoia, Harry (2) Chase, William Merritt (2) Curtis, Edward S. (2) Dows, Olin (2) Eakins, Thomas (2) Federal Art Project (2) Georgetown Garden Club (2) Gropius, Walter (2) Guthrie, Woody (2) Hartley, Marsden (2) Hollerith family (2) Hollerith, Herman (2) Hollerith, Lucia Beverly (2) Hollerith, Nannie Talcott (2) Hollerith, Virginia (2) Keystone View Company (2)

Indians of North America (4) Anishinaabe (Chippewa/Ojibwa) (2) Assiniboine (Stoney) (2) Cree (2) Eskimos (2) Iroquois (2) Sahnish (Arikara) (2) Seminole (2) A'aninin (Gros Ventre) (1) A:shiwi (Zuni) (1) Acoma Pueblo (1) Ainu (1) Akimel O'odham (Pima) (1) Apache (1) Apsáalooke (Crow/Absaroke) (1) Arctic peoples (1) Bannock (1) Chaticks Si Chaticks (Pawnee) (1) Choctaw (1) Cochiti Pueblo (1) Diné (Navajo) (1) Fox (1) Haida (1) Havasupai (Coconino) (1) Ho-Chunk (Winnebago) (1) Hopi Pueblo (1) Isleta Pueblo (1) Kalispel (Pend d'Oreilles) (1) Kaw (Kansa) (1) Kickapoo (1) Kiowa (1)

United States of America (9) Africa (4) Egypt (3) Japan (3) Longwood Gardens (Kennett Square, Pennsylvania) (3) New York (N.Y.) (3) Syria (3) Bakun, Tall-e (Iran) (2) Benin (2) Burkina Faso (2) Central African Republic (2) China (2) Congo (Democratic Republic) (2) Côte d'Ivoire (2) Georgetown (Washington, D.C.) (2) Ghana (2) Iran (2) Iraq (2) Kenya (2) Kyoto (Japan) (2) Lebanon (2) Liberia (2) Mali (2) Mesopotamia (2) Milwaukee (Wis.) (2) Niger (2) Nigeria (2) Pasargadae (Extinct city) (2) Pennsylvania (2) Persepolis (Iran) (2) Rwanda (2)

Archives Center, National Museum of American History (26) Archives of American Gardens (24) Archives of American Art (19) National Anthropological Archives (10) Smithsonian Institution Archives (8) Freer Gallery of Art and Arthur M. Sackler Gallery Archives (7) National Air and Space Museum Archives (4) Eliot Elisofon Photographic Archives, National Museum of African Art (2) Ralph Rinzler Folklife Archives and Collections (1) Smithsonian Libraries (1)