Cass Balzer writes: “At noon on October 12, 2021, more than 130 library workers at Northwestern University met at the Rock, a well-known gathering space on the Evanston, Illinois, campus. They had decided to march to the provost’s office to declare their intent to organize as an affiliate of the Service Employees International Union (SEIU) Local 73 and to ask the university to recognize their union. Library unionization efforts are blooming around the country, taking place in public, private, and academic institutions of all sizes.”