From the library website: The San Diego County Library is no longer accepting physical donations of materials for the collection, with the exception of items produced by local authors or musicians. The Library purchases materials at steep discounts that come with labels, barcodes and covers, ready for customer use. It is more expensive to accept a donation and prepare it for circulation than it is for the Library to purchase a title that comes prepared by our vendors. If you would like to support the Library’s collection, we encourage you to donate funds for the purchase of physical and digital materials for our communities. http://www.sdcl.org/donations.html
If they do not accept them just take them to the Ramona food and clothes closet. Or the phone booth at Packard has a book exchange inside.
They arent always accepting books but usually you can bring them in and they will let you know in my experience
Thanks! Your answer is awaiting moderation.