Board of Supervisors unanimously approves Little Libraries initiative Little libraries are mailbox-like structures in communities to create neighborhood book exchanges where people can freely borrow or leave books for others to read. Credit: County News Center Published: 6:35 AM PDT March 17, 2021 Updated: 6:35 AM PDT March 17, 2021 SAN DIEGO COUNTY, Calif. — San Diego County’s Board of Supervisors voted unanimously Tuesday to create a “little libraries” initiative to boost literacy in low-income and communities of color by giving the people and children living in them more opportunities to have books to read in their homes. Supervisor Nora Vargas, who brought the item to the Board for consideration, said the County library system has “been fantastic” in promoting and increasing literacy through its 33 branch libraries, digital and e-books, services and programs.