La Sociedad was the newspaper of Mexico's Second Empire. For my research for my novel, I had the privilege-- as can you, should you visit Mexico City-- of reading the originals in the Biblioteca Miguel Lerdo de Tejada. (I had to use gloves and wear a mask...)
This truly extraordinary library is run by Mexico's Ministry of Finance (SHCP) and it is open to the public. Watch this brief overview and introduction by director Juan Manuel Herrera: