Here's an example of a primitive business card from my early days. Check out the AOL email address and (once critical) fax number - this even pre-dates my website!
This illustration was done (if I remember correctly) with a rapidograph (technical) pen. These pens clogged incessantly and and drove me ape. Eventually I evolved to using a brush for inking. A brush delivers a more varied and interesting line and won't seize up.