Raising support for all 36 of San Diego's Public Libraries 📚💡🔬💻 The Library Foundation SD strengthens communities by supporting excellence in the San Diego Public Library system through philanthropy, advocacy, and outreach. The Library Foundation is a catalyst for creating stronger communities through investment in the San Diego Public Library system — where access to resources supporting literacy, work readiness, and lifelong learning ensures equal opportunities for success. We raise funds, build collaborations and honor our patrons and donors.