Roman Vishniac Dr. Roman Vishniac, scientific photography and color photomicrography Date 1945–47 Dimensions Paper: 3 1/16 x 4 5/8 in. (7.8 x 11.7 cm) Print medium Ephemera Credit Line Gift of Mara Vishniac Kohn, 2013 Accession No. MVK.e.2008_rv_business card_04
