Ridgewood Older Adults Center, Apr. 18, spring fling, Apr. 22, Earth Day Celebration, ROACSenior Center, 59-14 70th Ave.; 718-456-2000.

PSA

Community Tax Aid (CTA), free help with tax returns; 212-788-7550, 9 a.m. to 5 p.m., Monday through Friday.

Flushing Community Volunteer Ambulance Corps, volunteers needed for clerical, dispatcher and other positions; 718-353-4965.

Glen Oaks Volunteer Ambulance Corps, volunteers needed to serve as dispatchers and ambulance crew personnel; 718-347-1637.