Since Nick is at the bottom layer of the Library hierarchy and shelves books, he is neither an august Librarian nor an honorable Clerk but merely a loyal Page. People in the first two categories received the usual box of 500 personalized cards, which only the Librarians will actually put to use.
The pages received a rubber-banded deck of about 20 cards, on which the name is blank.
After deep and lengthy consideration I can find no actual purpose for such a card. Nick cannot identify himself to customers with it unless he writes his name on it. Even so he has no reason to do this. He is a page; he shelves books and occasionally tells people where the fiction section or the bathroom is. In no situation will he hand a card to a Library customer and say “give me a call”. Unlike say a car rental agency or a medical clinic, a library has no customers who will need a card to remember the address or phone number of the place, either. It’s just not that kind of organization.
The nameless business card therefore represents a totally useless object in the pure Dada sense, like one of Man Ray’s objets inutiles. It exists and has the structure of a useful object but cannot be used for anything that it might represent.
This means that there is only one meaning of the card. It is to humiliate the pages and remind them of their lowly status. Like other Library employees, they are called upon to represent the organization, but they are not entitled to any identity of their own and must demonstrate this by displaying blank calling cards.
The card says: I am of no consequence. I think we all need one!