The book law of the Indies (Recopilación, libro I, título 24)

Fourteen laws on what could be printed about the Indies, what could be shipped there and who checked it. The título forbids novels in 1543, sends grammars of indigenous languages to a local examiner rather than to Madrid, hands the liturgical trade to the Escorial as a monopoly, and orders that every permitted book be entered in the register one by one, "y no se registren por mayor" — the clause that created the shipping lists historians still count.