The Coronado Friends of the Library is a nonprofit organization that supports the public library by raising money through various fund-raising events like the Annual Book Fair in April. The organization also operates the Second Hand Prose bookstore, which is located in the back parking lot of the library. The bookstore is run entirely by volunteers and sells "gently used" books at major discounts. There are literary treasures just waiting be found, and most paperbacks only cost $1. All proceeds go directly to the library.