A collection of art prints from the era of World War II is filed in the Historical Reference Branch collection of records, artwork and photos. Teams of interns have worked with the oral history, film and Historical Reference Branch departments to digitize files. Their contributions include creating an inventory, cleaning and scanning files. - A collection of art prints from the era of World War II is filed in the Historical Reference Branch collection of records, artwork and photos. Teams of interns have worked with the oral history, film and Historical Reference Branch departments to digitize files. Their contributions include creating an inventory, cleaning and scanning files.