The J. Horace McFarland Collection includes over 3,100 photographic images of private and public gardens throughout the United States, as well as some from foreign countries, dating from 1899 to 1963. Many of these images, generated for Mount Pleasant Press (later the J. Horace McFarland Company), were used to illustrate trade catalogs published by the firm as well as journal and newspaper articles. The collection also contains color records that were used as reference aids during the printing process, plant patents, and various publications of the McFarland Company.

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 W. Atlee Burpee & Company records, dated circa 1873-1986, document the firm's business activities developing plant varieties and marketing and selling seeds. They include accounting records, seed trial records, seed contracts, sales records, inventories, office correspondence, seed catalogs, promotional and instructional materials, advertisements and advertising reports, contest letters, daybooks, photographs, reference materials, and other items relating to the company and some of its competitors.

The National Museum Building Construction Records, 1894 - 1919 (bulk 1903 - 1911), document the process and methods used to construct the National Museum Building that is now known as the National Museum of Natural History. These records primarily refer to the management of the construction aspects of the project, documenting specifications ...

These records document the administrative activities of the Office of Plant Service (OPlantS), Horticulture Services Division. Materials include correspondence and memoranda pertaining to greenhouse construction; Smithsonian grounds maintenance; outgoing loans, grants, and gifts; slide collections; contracts with private companies and ind...

A New York bookseller, Warshaw assembled this collection over nearly fifty years. The Warshaw Collection of Business Americana: Paper Products forms part of the Warshaw Collection of Business Americana, Subseries 1.1: Subject Categories. The Subject Categories subseries is divided into 470 subject categories based on those created by Mr. Warshaw. These subject categories include topical subjects, types or forms of material, people, organizations, historical events, and other categories. An overview to the entire Warshaw collection is available here: Warshaw Collection of Business Americana

The papers of art historican August Jaccaci measure 7.2 linear feet and date from 1889 to 1935, with the bulk of the material dating from 1904 to 1914. The collection documents Jaccaci's work as an art historian, writer, and editor, primarily during the period he researched, compiled, and published his book Noteworthy Paintings in Private American Collections. More than one-half of the collection consists of extensive correspondence to and from many notable artists, collectors, and art historians, including John La Farge, Kenyon Cox, Isabella Stewart Gardner, and Bernard Sickert concerning the research and publication of the book. The papers also house legal files, writings and notes, art collection research files, and photographs of artwork.

The Isabelle C. Greene Collection includes 35mm slides that document select gardens designed by landscape architect Isabelle C. Greene.

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 papers of Howard Russell Butler measure 3.0 linear feet on 7 microfilm reels and date from 1874 to 1936. The collection includes writings, journals, organizational papers, correspondence, biographical information, printed matter, art works, and diaries. Correspondence includes about 1700 letters concerning Butler's artwork, his interest in as...