15th century illuminated manuscript.
Images from the public domain scans of the original on Wikimedia: http://commons.wikimedia.org/wiki/Category:Tr%C3%A8s_Riches_Heures_du_Duc_de_Berry_scan_2004 Coordinates with my other Très Riches Heures calendar fabric found here: http://www.spoonflower.com/fabric/1866453