put in writing

References in classic literature ?
And one of the doctors of Italy, Nicholas Machiavel, had the confidence to put in writing, almost in plain terms, That the Christian faith, had given up good men, in prey to those that are tyrannical and unjust.
I gave him a strict charge not to bring any man who would not first swear in the presence of himself and the old savage that he would in no way injure, fight with, or attack the person he should find in the island, who was so kind as to send for them in order to their deliverance; but that they would stand by him and defend him against all such attempts, and wherever they went would be entirely under and subjected to his command; and that this should be put in writing, and signed in their hands.