Friends of the Library of Los Altos and Community book sale at Hillview Community Center, 97 Hillview Ave., Los Altos. Information: losaltoslibraryfriends.org.
Rock Back the Clock, 1950s-themed dinner-dance, 6-10 p.m. at Rancho Shopping Center at Foothill Expressway and Springer Road, Los Altos. Proceeds benefit the Los Altos Festival of Lights Parade. Information: losaltosparade.com/RockBack.htm.
42nd annual Mountain View Art & Wine Festival, 10 a.m. to 6 p.m. on Castro Street. The event will feature live music, wine and beer, a diverse selection of food vendors and more than 600 artists showcasing arts and crafts. Information: 968-8378 or chambermv.org.
“Shake, Rattle & Roll,” fundraiser for the Los Altos Community Foundation, 5:30-11 p.m. at Stone- brook Court Manor, Los Altos Hills. The event will include dinner, live music, dancing and auctions. Information: losaltoscf.org.
Los Altos Fall Festival, 10 a.m. to 5 p.m. in downtown Los Altos. Information: losaltoschamber.org.