Libraries are thought of as calm, quiet places. But spend a few minutes talking with Lois Harger, treasurer of the Friends of the Spokane Valley Library, and she is likely to convey that there is much more going on behind the scenes than most realize. She has been preparing for this weekend's Spokane Valley Library Book Sale since last spring. Harger and about nine other dedicated volunteers are going to see their hard work pay off at the twice-yearly event this Saturday from 9 a.m. to 3 p.m. at the Main Avenue library branch. The sale is the major fundraiser for the locally-based nonprofit organization that supports library programs like twice-monthly movie nights, teen parties, children's events and staff appreciation snacks.