sentences:  In their era, most members of the stationers guild were either printers or booksellers; both were businessmen with their own establishments, journeymen and apprentices, though in anachronistic modern terms printers could be regarded as blue-collar while the booksellers were white-collar retailers.Most commercial publishing was done by booksellers, who chose their books and commissioned printers to print them.The distinction, while generally valid, was not absolute; some successful printers, like Richard Field, published a significant minority of the works they printed.