"The Republican Presidential Candidate Now on View. Charles A Dana 'Come and see! Two cents a sight! Great Sun Microscope! Magnifies 100,000,000,000 Diameters'."Hansen, Bert, 1944-1880 August 11engPuck (7:179), front cover. Dana showing the "Sun" microscope to look at Garfield's record, with slide of sea creatures. Hansen database #156.