The Dr. G. Howard White, Jr. Collection contains images of family members and residences relating to the White family of Catonsville, Maryland and Middleburg, Virginia and the Liebig family of Catonsville, Maryland, as well as recreational, industrial, and general sites in Virginia, Maryland, and New Jersey. The images, taken by Dr. G. Howard White, Jr. and Dr. Gustav Adolph Liebig, both amateur photographers, document everything from informal family gatherings and outings to domestic servants, workers, factories and railroad lines. The acession file includes some genealogical information and research on properties conducted in 2005.

Collection consists of 183 35mm photographic slides that Dr. John M. Fogg took of a variety of arboreta, botanic gardens, plant nurseries, and other assorted gardens throughout the United States and Canada between 1955 and 1967.

The Hollerith Family Collection includes approximately 2,200 35mm slides dating from 1952 to 1980 that document the horticultural interests and travels of sisters Virginia and Nan Hollerith, members of the Georgetown Garden Club in Washington, D.C. The images primarily show private and public gardens, plantations, and historic sites in the mid-Atlantic and the southeast regions of the United States. Included in the collection are slides documenting the activities of the Georgetown Garden Club and various floral arrangements.

The Captain A.H. McComb, Jr. Collection includes approximately 230 35mm slides of public and private gardens and landscapes dating from 1956 to 1966, photographed by Captain A.H. McComb, Jr. at sites in Washington, D.C., Maryland, Virginia, New York, United States Virgin Islands, Argentina, Bermuda, Capri, Cuba, Denmark, England, France, Germany, Haiti, Jamaica, Panama, Puerto Rico, and Tobago.

The collection contains the project design records of Rudy J. Favretti. , a landscape architect and professor noted for his extensive work in historical restoration of gardens, parks, and landscapes. He donated his collection of garden design files, plans, and images to the Smithsonian's Archives of American Gardens in March 2011.

The Historic Gardens Postcard Collection includes 200 postcards of historic views of various public gardens, parks, monuments, and buildings throughout the United States and some foreign countries, including Canada, France and Cuba. Some private gardens and estates and many Washington, D.C. attractions are also represented. Roughly half of the postcards were mailed; the remaining postcards were not written on or posted. Areas represented include Arizona, California, Colorado, Delaware, Florida, Illinois, Indiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Nebraska, New Jersey, New York, Ohio, Oregon, Pennsylvania, Texas and Virginia. Foreign views show gardens in Havana, Paris, and Canada. About a dozen cards feature various views of Smithsonian Institution museums along the National Mall in Washington, D.C.

The Smithsonian Institution Archives (SIA) began its Oral History Program in 1973. The purpose of the program is to supplement the written documentation of the Archives' record and manuscript collections with an Oral History Collection, focusing on the history of the Institution, research by its scholars, and contributions of its staff. Progra...

Photographs collected and made by Helen Hamilton Gardener, probably during a world cruise following her husband's retirement from active duty in Puerto Rico in July 1902. The photographs document people, activities, cities, and tourist sites in Japan, China, Egypt, France, Puerto Rico, and elsewhere. Gardener's lecture notes and a clipping from t...

The Lois W. Poinier Collection documents the work of Lois W. Poinier, a self-taught garden designer who designed scores of gardens, most of them in New Jersey.

The Perry H. Wheeler Collection includes the design, client and business records of Perry H. Wheeler, a landscape architect best known for his work on numerous townhouse gardens in the Georgetown neighborhood of Washington, D.C., during the 1960s as well as the redesign of the White House Rose Garden in collaboration with Rachel Lambert ('Bunny') Mellon during the Kennedy administration.