Ellen Rosen writes: “Many companies and public institutions were unprepared for the pandemic and the ensuing lockdown. There was one notable, perhaps even surprising, exception: the nation’s public libraries. Librarians across the country foresee institutions that will blend the physical with the digital, increasing their emphasis on their critical community role by offering free Wi-Fi and social services as well as a place where physical books and DVDs coexist with ebooks and online platforms.”