This collection contains nineteenth-century pathological photomicrographs made at or donated to the Museum. Many are bound in volumes. Many were taken by Joseph J. Woodward (head of the Museumâs Medical and Microscopic Sections, see Woodward Collection), or were completed under his supervision. Woodward, with the assistance of Assistant Surgeon Dr. Edward Curtis, did pioneer work in the photographing of objects visible only under the microscope, using an apparatus largely of their own devising. The early work in photomicrography was described in a report to the Surgeon General, which can be found in Box 001, Folder 00001. Some of the images were also displayed at the Philadelphia Exposition of 1876 and used in the Medical and Surgical History of the War of Rebellion. Images include insects, algae, fungi, and pathological conditions studied in animals.