His most recent book is The Lousy Racket: Hemingway, Scribners and the Business of Literature (2007), a study of Ernest Hemingway's professional relationship with his primary American publisher. He is also the editor of Ernest Hemingway: A Literary Reference (1999)and co-editor of "The Only Thing That Counts": The Ernest Hemingway/Maxwell Perkins Correspondence, 1925-1947 (1996). Currently, he serves as Associate Executive Editor of the Cambridge Edition of the Works of Joseph Conrad and is heading the editorial team producing volume 1 of the Cambridge Edition of the Letters of Ernest Hemingway.