Elizabeth A. Harris writes: “The churning disruption in the global supply chain, which has touched everything from minivans to dishwashers to sweaters, has now reached the world of books, just as the holiday season—a crucial time for publishers, and a period that can make or break the entire year for an independent bookstore—approaches. Publishers are postponing some release dates because books aren’t where they need to be. Older books are also being affected as suppliers struggle to replenish them. To get a book printed and into customers’ hands, there are essentially two different supply chains. On both paths, at virtually every step, there is a problem.”