Which preposition to use with amanuenses

in Occurrences 3%

In order to shew the Absurdity of the Practice, he had recourse to the Invention above mentioned, having placed an Amanuensis in a private part of the Room.

to Occurrences 3%

The judge and the young copyist thus naturally became acquainted, and acquaintance ripened into friendship, for the youth was bright and useful, and made an excellent amanuensis to the learned old lawyer, in whose office both Thomas Jefferson and John Marshall had been students of law.

of Occurrences 2%

He is only the amanuensis of truth and history.

with Occurrences 1%

" This last line, which was not meant for the world (but little would Pym have cared though it had been printed), usually brought his employers to their knees; and then, as Tommy advanced in experience, came the pickingsfor Pym, with money in his pockets, had important engagements round the corner, and risked intrusting his amanuensis with the writing of the next instalment, "all except the bang at the end.

Which preposition to use with  amanuenses