Derricourt's candid yet encouraging suggestions will be useful at any stage of book preparation, including the process of writing, when focusing on purpose and audience benefits both the author and the future publisher, not to mention the future reader!
Furthermore, his "letters" include those on various kinds of books - standard monographs, technical books, conference volumes, edited volumes, collected papers, textbooks, and works built on dissertations. A reference of "nuts and bolts," this book is also quick and entertaining reading when perused from cover to cover.