While locals are queuing up in the former Bon-Ton department store in Lancasterâs Park City Center for their shots of COVID-19 vaccine, a group of library volunteers is making plans to set up their annual Big Book Sale in that same spot â just a few months later than they originally thought. Pat Ditzler, book operations chair for the Friends of the Lancaster Public Library, says the fundraising Big Book Sale theyâd hoped to return to its usual May schedule will move to August again this year, after Lancaster Countyâs mass-vaccination center has finished its work this summer.