Ferdinand I of Austria (1793-1875, Emperor of Austria, President of the German Confederation, King of Hungary and Bohemia (as Ferdinand V), as wellas associated dominions from the death of his father, Francis II, holy Roman Emperor, until his abdication after the Revolutions of 1848): lovely signature 'Ferdinand' on letter dated 'Salsburg le 6 Ma1868' to Vicomte de Poli, expressing his delight in recieving his book 'Les Soldats du Pape'