We have changed how we collect and accept calendar information. Readers must now submit all items through our website. Go to events.contracostatimes.com, click on "submit your event," register at this point and enter your event. You do not have to pay. Submitting your event in this way will ensure it is part of our easily searchable online database, as well as a candidate for space in our publications.

Library Book Sale. Friends of the Alameda Free Library's used book sale features thousands of gently used books of all genres, children's books galore, DVDs, records and more. Sunday is clearance day. 9 a.m. to 4 p.m. May 17. Noon to 4 p.m. May 18. Free. Albert H. DeWitt Officers' Club, 641 West Redline Ave., Alameda Point. www.friendsalamedafreelibrary.org

Not Your Mother's Garden Party. Alameda Point Collaborative holds "Not Your Mother's Garden Party," an afternoon of inspiration, entertainment and good company to support the Collaborative's supportive housing community. 3 to 6 p.m. May 18. Ploughshares Nursery, 2701 Main St., Alameda. $30. 510-898-7800, apcollaborative.org.

AAPS Preservation Awards. Alameda Architectural Preservation Society presents 17th annual Preservation Awards and reception gala. 7 p.m. May 18. Free. Auctions by the Bay Theater, 2700 Saratoga Ave., Alameda. 510-479-6489, www.alameda-preservation.org.

Author Peter Heller. Peter Heller, author of "The Dog Stars," shares his work of fiction, "The Painter."Friends of Books Inc. 7 p.m. May 21. Books Inc. 1344 Park St., Alameda. 510-522-2226, booksinc.net.