The American Conifer Society Records include correspondence, ACS Bulletin materials, Board of Directors' meeting minutes, audiotapes of Board of Directors' meetings, financial records, incorporation documents, by-laws and policies, contracts, ACS national meetings materials, members' plant inventories, materials related to the slide program "A Brief Look at Garden Conifers," ACS Central Region meeting files, locations of ACS national meetings (1983-2001), and membership directories.

The Gene Eisenbeiss Papers include administrative files, such as correspondence regarding registration of cultivar names, location of cultivars for purchase, and information requested about the Ilex genus (holly and its relatives). There are also miscellaneous publications and literature on plants, as well as engraving blocks of holly illustrations used for publications and given to Eisenbeiss by Harry William Dengler of the Extension Service, USDA, at the University of Maryland.

The Prince Family Papers contain correspondence, account books, notebooks, and journals that provide an insight into the difficulties of maintaining a large nursery in the early years of the United States. Much of the material concerns business dealings between members of the Prince family and those transacting business with them. The remaining portion of the material deals with observations on and experiments with plants.

The Society of American Florists Records and Book Collection consists of both organizational records and bound volumes. The Society of American Florists (SAF) Records cover the period from 1894 to 1993, and contain proceedings, meeting minutes, correspondence, memoranda, publications, photographs, and scrapbooks. The SAF Book Collection consists of over 200 volumes, including monographs and bound serials from 1793 to 1990.