Farewell To The Mass-Market Paperback Book

First introduced in the 1930s, mass-market books (once called “pulps”) sold in huge quantities for decades. Yet sales have been slowly-but-steadily sinking since the 1990s, displaced by ebooks and (more expensive) trade paperbacks, and the wire racks filled with the inexpensive titles in supermarkets, drugstores, and the like have almost disappeared. – The New York Times