National Lead was one of the 12 companies tracked by this "average" when it debuted May 26, 1896
- Telegraph [PAR] Mar 5, 2013 ... May 26, 1896: The Dow Jones industrial average makes its debut, consisting of 
the stocks of 12 companies: American ... Laclede Gas Light Co, National Lead, 
North American Co, Tennessee Coal, Iron & Railroad Co, US.