No More Learning

The guild or fraternity of scriveners and others           with
the production and sale of books, which had been formed in 1403,
had, with the increased trade in books and the introduction of
printing, developed in course of time into the craft of Stationers;
and, as all persons carrying on any business in the city of London
connected with the book trade were required to become members
of the craft, this association had long exercised considerable
influence in fixing and controlling trade customs.