Papal bulls

type of letters patent or charter issued by a Pope of the Catholic Church

a letter sent by Pope Leo I to Flavian of Constantinople

formal document emanating from the pope

Catholic ceremonial crowning of an image of Mary or Jesus

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Bullarium is a term commonly applied to a collection of papal bulls and other analogous documents, whether the scope of the collection be general in character, or limited to the bulls connected to any particular order, or institution, or locality.