Book Cover Art: L. Back Cover; Friedrich Georg Weitsch, Portrait of Alexander von Humboldt (1769–1859), 1806, oil on canvas, 49 5/8 x 36 3/8 in., Staatliche Museen zu Berlin, Nationalgalerie, Photo: bpk Bildagentur / Nationalgalerie, Staatliche Museen, Berlin, Germany / Klaus Goeken / Art Resource, NY. R. Front cover Art. Frederic Edwin Church, The Natural Bridge, Virginia, 1852, oil on canvas, 28 x 23 in. The Fralin Museum of Art at the University of Virginia, Gift of Thomas Fortune Ryan.
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