Travel back in time with the Oak Bluffs library on Friday, June 26, from 6 to 8 pm for a ’50s Sock Hop. The themed event will feature the doowop dance music of Serendipity, an Island oldies and Motown band. Enjoy the soda fountain and refreshments. Activities will include trivia games, a dance contest, and a costume contest. Prizes will be given. This free, adults-only event is sponsored by the Library Friends of Oak Bluffs. For additional information contact Anna Marie D’Addarie at email@example.com or 508-693-9433.