1909 2 3 Electric Car Batteries Article Batteries for Electric Vehicles Seen at the Madison Square Slow BY C. H. Calkins THE HORSELESS AGE February 3, 1909 University of Minnesota Library 8.25″x11.5″ page 169
1911 3 8 EXIDE Battery Article The Ironclad-Exide Battery THE HORSELESS AGE March 8, 1911 University of Minnesota Library 8.25″x11.5″ page 450
1911 3 8 EXIDE Battery Article The Ironclad-Exide Battery THE HORSELESS AGE March 8, 1911 University of Minnesota Library 8.25″x11.5″ page 451