SLO Friends of the Library is a group that tries to:
- raise public awareness of the Library's role in the community
- raise funds and promote gifts, endowments, and bequests
- advocate measures that will help preserve and enhance library services and programs
- provide support to the SLO Library, its community and the SLO community
- promote and support volunteer services to the SLO library
They conduct an annual fundraising used book sale at the Vet's Hall, a "Book Club in a Box" program to promote local book clubs, and an in-school reading program, among other projects.