San Diego County LibraryCasa de Oro Branch(Services have changed during COVID-19. Click here for more information.) 8074 Allison AveLa Mesa, CA 91942(619) 469-2151www.sdcl.org Monday through Friday10:00am-4:00pm San Diego County LibraryLa Mesa Branch(Services have changed during COVID-19. Click here for more information.) 9805 Campo Rd., #180Spring Valley, CA 91977(619) 463-3236www.sdcl.org Monday through Friday10:00am-4:00pm San Diego County LibrarySpring Valley Branch(Services have changed during COVID-19. Click here for more information.) 836 Kempton St.Spring Valley, CA 91977(619) 463-3006www.sdcl.org Monday through Friday10:00am-4:00pm