The Friends of the Pella Public Library will begin their annual spring book sale this Saturday. The sale will be held in the library meeting room, with books restocked daily. Customers may take as many books as they want for a donation of their choice. The spring book sale at the Pella Public Library will run from Saturday until Monday April 19th. The Knoxville Public Library is also holding a book sale, which will run from 10:00 a.m. to 6:00 p.m. Friday and 10:00 to 12:00 on Saturday.