The Cardiff-by-the-Sea Library celebrates its 100th anniversary March 22 with a half-price book sale in the library’s Book Nook from 10 a.m. to 4 p.m. Musical entertainment and speakers will be on hand in the Community Room at 11 a.m. Refreshments will also be provided. The library is located at 2081 Newcastle Ave. in Cardiff. More information: 760-635-1000. Online: www.friendscardifflibrary.org.

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