Hope Corrigan writes: “Book buyers, beware: New books will be in short supply for the rest of 2021. Publishers are warning sellers and consumers that supply chain issues have forced a major slowdown in book production and threaten a shortage of certain titles for the rest of the year. Supply chain problems have touched almost every aspect of book production, storage, and delivery, mostly as a result of COVID-related bottlenecks. Printer capacity issues plagued the publishing industry last year, too, though 2021 is expected to be worse.”