An old-fashioned ice cream social will be held at DeBows United Methodist Church, corner of Route 537 and Route 571, Jackson, 3-6 p.m. Sept. 17 (rain date Sept. 18). The admission of $6 for adults and $3.50 for children under 12 includes all games, a bowl of ice cream with toppings, chips, drink and hot dogs. Details: 732-928-4475.

 A late-summer flea market fundraiser will be held from 8 a.m. to 3 p.m. Sept. 17 in the show field ofAllaire State Park, Wall Township. (Rain date Sept. 18). Admission is $1 per adult and free to children age 12 and under. Details: 732-919-3500.

 Fish, hike, kayak, rock climb and more at the New Jersey WILD Outdoor Expo being held from 10 a.m. to 5 p.m. Sept. 17 and 18 at the Colliers Mills Wildlife ManagementArea in Jackson. The expo is free and is designed to help visitors discover ways to appreciate the outdoors. Details: www.wildoutdoorexpo.com.

 Local physician and author Michael Rushnak will present his latest medical mystery thriller, “The Savior Vaccine,” from 10 a.m. to 2 p.m. Sept. 17 at Barnes & Noble, 44 Brick Plaza, Brick Township. Rushnak’s first novel, “Terminal Neglect,” was published in 2008. Rushnak will present both novels from 11:30 a.m. to 3 p.m. Nov. 5 at the Jackson library. For more information, visit www.michaelrushnakbooks.com.