The Half Real of 1856 :

Míreanna comhchosúla

• A catalogue of the stamps of Mexico 1856-1900 /
• A catalogue of the stamps of Mexico 1856-1910 /
• The Stamps of the Mexican Revolution 1913-1916 /
• Postmarks of Mexico 1821 to 1883 /
  de réir: Tylor, Peter W.
• More Precious than Gold and Philately /
  de réir: Forsher, Bruno J.