| Marcus Aurelius Root Panorama of Philadelphia. Chestnut Street, East of Fifth - Collins and Autenrieth (Artists) 1856 Lithograph 6 3/4 x 10 1/4 in National Gallery of Canada, The Origins of Photography: The Matthew R. Isenburg and Enhanced Isenburg Collections 1840-1880 Courtesy of Nick and Lynn Heckett LL/15028
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