Series 1 includes photographs, portraits, and correspondence collected by Merrill for the above publications. Series 2 through 5 include photographs of groups, particularly of the United States Geological and Geographical Surveys of the Territories (Hayden Surveys); and photographs of geological formations and of buildings in the Washington, ...

The Hannah Marie Wormington papers, 1930-1993, document her professional career as an archeologist through correspondence, film, grant proposals, lantern slides, lecture notes, manuscripts, newspaper clippings, photographs, presentations, publications, reports, slides, and sound recordings, including her field work at the Folsom Site.

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.

The major part of the collection, series 1-4, contains nearly 28,000 glass plates, including original stereoscopic negatives, interpositives, and both negative and positive non-stereoscopic plates used to produce lantern slides and paper prints. The photographs were taken all over the world. The majority are from the Underwood & Underwood active fi...