Maine author, humorist and radio personality John McDonald will be signing his new book, “Maine Trivia: A Storyteller’s Useful Guide to Useless Information.” Might make a good last-minute Father’s Day gift.

WHEN: 11 a.m. to 1 p.m. Saturday

WHERE: Nonesuch Books, 50 Market St., Mill Creek Shopping Center, South Portland

HOW MUCH: Free

INFO: 799-2659; nonesuchbooks.com