| Alvin Langdon Coburn The Lord of the Dynamos 1911 Photogravure 8 1/16 × 6 7/16 ins (20.4 × 16.3 cm) (image) 8 5/8 × 6 13/16 ins (21.9 × 17.3 cm) (sheet) Philadelphia Museum of Art Gift of Mr. and Mrs. Adrian Siegel, 1972, Accession Number: 1972-149-1 LL/71443 Published by Mitchell Kennerley, New York, active early 20th century.
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