The American writer, Charles Portis, has had what some novelists — the more purist ones — might regard as an ideal life. While his books have seldom been big-sellers, his fans sink to their knees at the mention of his name.

In the mid 1980s, two bookshop employees in New York were so smitten with Portis’s then out-of-print novel, The Dog of the South, that they bought up all 183 hardback copies on the market and put them in their bookshop window.