“There was a pair of books, one by Hemingway, another by Thomas Wolfe. Each had written a long inscription to the other. A knowledgeable dealer had to inform the unfortunate owner who had just paid a pretty penny for them that the inscriptions were not authentic, and that the value was not what he had hoped. Later, another dealer discovered that they were spectacular forgeries: Wolfe had written Hemingway’s inscription, and Hemingway, Wolfe’s.”