As a nonprofit with tax ID 33-0638967, Friends of the La Mesa Library Bookstore in La Mesa funds one of the San Diego County Library system's busiest branches through volunteer-run used-book sales. Revenue from donated books, DVDs, and CDs funds annual new-collection acquisitions, 24 monthly storytimes, and Sensory Playtime with STEAM programming for children with autism, with event flyers and membership materials produced through MAC Printing. The branch it supports ranks fifth in San Diego County for circulation at over 737,000 items checked out per year and sixth for foot traffic at more than 272,000 annual visitors. Volunteer-staffed shelves inside the library's front entrance on Allison Avenue carry everything from current fiction and children's picture books to vintage first editions, creating a secondhand literary destination blocks from the greeting-card and gift inventory at Elam's Hallmark Shop. Highest-value inventory includes vintage and collectible editions evaluated and priced separately from the general stock, with proceeds directed toward the library's 3D-printer equipment and 18-station public computer lab.