The Branson DeCou Digital Archive consists of digitized images of 8,000 hand-tinted 3-1/4 x 4 in. glass lantern slides used in years of travel lecture tours covering all countries of the world, from ca. 1920-1941. The physical archive is housed in the library's Special Collection and Archives department and is divided into 7 series: Photographic Albums, Notebooks and Travelogues, Slides, Photographs, Negatives, Resource Material, and Artifacts. The majority of the materials are arranged into geographic divisions, by country or area.
More information is available in the online finding aid: http://www.oac.cdlib.org/findaid/ark:/13030/ft709nb32t or contact Special Collections (firstname.lastname@example.org).