Friends of Lake Forest Library Book Sale starts Thursday, September 14 and goes through Sunday, September 17. The sale is held at the Lake Forest Rec Center at 400 Hastings Rd. in Lake Forest. Thursday, September 14, 9:00 am-5:00 pm: For more and volunteers. Memberships available at the door. 20% markup Friday, September 15, 9:00 am-8:00 pm Saturday, September 16, 9:00 am-5:00 pm: Teachers get 25% off Sunday, September 17, 9:00 am-5:00 pm: Bargain Day 50% off