Don Baum. Don Baum Christmas card to Kathleen Blackshear, 19--. Kathleen Blackshear and Ethel Spears papers, 1920-1991. Archives of American Art, Smithsonian Institution.
Werner Drewes. Werner Drewes Christmas card to unidentified recipient, 1955. Werner Drewes papers, 1838-2015. Archives of American Art, Smithsonian Institution.