7207091 Benjamin Franklin, 1901 (mezzotint) by Rosenthal, Max (1833-1918); National Gallery of Art, Washington DC, USA; (add.info.: Benjamin Franklin, holds the tip of a pointed lightning rod, while another terminates with a round knob lies on the table before him. The refers to his preference for the pointed rod, then preferred by King George III. Copied onto the paper beside the inkwell is a passage about lightning rods from his book, \'Experiments and Observations on Electricity.\').