PRINCETON — The Covered Bridge Quilters Guild will sponsor its annual sewing machine cleaning from 9 a.m. to 4 p.m. Sept. 13 at the Princeton Public Library. Technicians from the Galesburg Sewing Center will clean, oil and adjust the machines. The cost is $35 for regular machines, $45 for sergers and electronic machines, and up for embroidery machines. To register a machine or for information, call Sandy Rieker at 815-879-4091. Early drop off will be at 7:30 a.m.