The Roche Collection documents some of the work of John and Mary Alice Roche, garden photographers who photographed numerous gardens throughout the United States. Several of the Roches' images appeared in popular gardening magazines and books on flower arranging from the 1950s and 1960s.

The Frederic H. Leubuscher Collection contains 106 duplicate 35mm slides documenting examples of Leubuscher's landscape architecture design work in New Jersey, New York, North Carolina, Rhode Island and other locations.

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 Untermyer Family Slide Collection includes 119 glass 35mm slides documenting the grounds of Samuel Untermyer's estate, Greystone. In addition to general garden views, the images depict architectural features, vistas from the property, and interior shots of Greystone's greenhouse. The slides are not captioned or dated. The photographer was Samuel Untermyer II, the grandson of Samuel Untermyer.

The Gottlieb Hampfler Collection contains 63 duplicate 35mm slides of images of gardens in the Brandywine Valley in Delaware and Pennsylvania and Rye, New York taken by Hampfler, the staff photographer at Longwood Gardens in Kennett Square, Pennsylvania, from 1955-1975.

The Corliss Knapp Engle slide collection contains 35mm slides of gardens, garden features, flower shows, and flora photographed by Corliss Engle, a self-taught photographer and horticulturalist. Much of the collection is comprised of photographic documentation of numerous private and public gardens that she visited throughout the United States. Of particular note are images of Engle's own garden in Brookline, Massachusetts, spanning three decades; they provide excellent insight into the development and evolution of a garden over time. Portions of the collection highlight Engle's involvement with the Garden Club of America and the GCA's Garden History and Design Committee. The collection also includes various notes, lecture scripts, brochures, programs and articles on garden and plant-related themes generated or compiled by Corliss Knapp Engle.

The Lewis & Valentine Company Collection contains records of the Lewis & Valentine Company dating from 1916 to 1971 including photographs, negatives, brochures, books, trade catalogs, company papers, letters from clients, customer lists and a history of the company written by Harold Carman Lewis. Photographs document the Rodin Museum in Philadelphia, estates in Long Island, New York, and the properties of Hugh D. Auchincloss, Eugene du Pont, Walter P. Chrysler, Otto H. Kahn, F. W. Woolworth, Pierre S. du Pont (Longwood Gardens), Charles M. Schwab and Edward T. Stotesbury. This collection contains only a sampling of the records of Lewis & Valentine and should not be considered comprehensive.

The Maida Babson Adams American Garden Collection documents the work of Molly Adams, a free-lance garden photographer who photographed hundreds of private and public gardens, many of them in the mid-Atlantic region, from the late 1950s through the mid-1990s. It includes slides, photographic prints, negatives and transparencies. A significant number of images document the work of landscape designers Nelva M. Weber, Alice Recknagel Ireys, and Friede Stege. Roughly 50 gardens do not have an identified location. Some images have captions and other information written on them.

The Richard Marchand Historical Postcard Collection contains approximately 1,200 35mm slide reproductions of postcard images depicting early twentieth century architectural and garden views of over 600 private estates throughout the United States. The collection includes views of estates owned by popular movie stars of the 1920s and 1930s, including Charlie Chaplin, Mary Pickford, Douglas Fairbanks, Claudette Colbert and Buster Keaton.

Elizabeth Moynihan is an architectural historian and author, specializing in the study of Mughal gardens in India. This collection measures 7.13 linear feet and documents Elizabeth Moynihan's research of the Lotus Garden of Dholpur, the Jai Mahal Garden in Jaipur, Mehtab Bagh, and many other Mughal Gardens in India. It includes correspondence; fiel...