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.

A New York bookseller, Warshaw assembled this collection over nearly fifty years. The Warshaw Collection of Business Americana: Medicine 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

These records consist of the correspondence of the director of the International Exchange Service along with invoices and shipping instructions. The bulk of the correspondence relates to the exchange of printed matter between parties in the United States and abroad.

This collection contains over 37,000 35mm slides, 3,000 glass lantern slides and garden files that may include descriptive information, photocopied articles (from journals, newspapers, or books), planting lists, correspondence, brochures, landscape plans and drawings. Garden files were compiled by Garden Club of America (GCA) members for most of the gardens included in the collection. Some gardens have been photographed over the course of several decades; others only have images from a single point in time. In addition to images of American gardens, there are glass lantern slides of the New York Flower Show (1941-1951) and trips that GCA members took to other countries, including Mexico (1937), Italy, Spain, Japan (1935), France (1936), England (1929), and Scotland. A number of the slides are copies of historic images from outside repositories including horticultural and historical societies or from horticultural books and publications. The GCA made a concerted effort in the mid-1980s to acquire these images in order to increase its documentation of American garden history. Because of copyright considerations, use of these particular images may be restricted.