The "Handbook of Sales Humor for All Situations" by Henri Saint-Laurent is a vintage nonfiction book published in 1971. This hardcover book provides humorous insights and jokes specifically tailored for salesmen, making it a valuable resource for those looking to lighten up their demeanor during negotiations. With a dust jacket and vintage charm, this book offers a unique perspective on using humor in sales, making it a must-have for anyone in the business world.