NIGHTMARE ON MAHONING AVENUE: The Warren-Trumbull County Public Library, 444 Mahoning Ave. NW, will host “It’s the Nightmare on Mahoning Avenue, Charlie Brown” 6 to 7:30 p.m. today for ages 12 to 18. The Teen Central’s annual spooky event includes trivia, games and other activities. Those attending can come dressed in Halloween costumes. The event is free.

TRUNK OR TREAT IN FALLS: Newton Falls schools will host a trunk or treat 5 to 6 p.m. Thursday in the school campus parking lot near the elementary school. There will be candy for the children. A Scottish Highlander mini cow will be at the event.

LIBERTY HALLOWEEN EVENT: The Liberty Township administration building, 1315 Churchill Hubbard Road, will welcome children 4:30 to 6:30 p.m. Friday for Halloween.

The police department staff will be there to welcome children and hand out treats.

MODEL TRAIN SHOW: Model trains of all shapes and sizes will be displayed at the Youngstown Model Railroad Association fall open house, noon to 6 p.m., Saturday and Sunday, Nov. 8 and 9, Dec. 6 and 7 and Dec. 13 and 14, at 751 N. Four Mile Run Road.

The YMRA is one of the few clubs in the country that has two complete displays, ‘O’ scale and ‘HO’. Both layouts feature more than 100 scale miles of track each.

A donation of $5 per person is requested. Children 11 and under with an adult are free.