coffee-table book

— Nonbooks are of several kinds; but their differences notwithstanding, they all share two common features: they tend to be written for market rather than for intellectual reasons, and they are all means rather than ends. [...] Of all nonbooks, the most conspicuous example is the ‘coffee-table book’. The latter usually find their market by virtue of their decorative assets rather than from any literary or intellectual merit, or for that matter – since such works are often art books – by significantly serving important aesthetic or historical purposes.