LEESBURG HALLOWEEN PARADE

The Kiwanis Club of Leesburg asks everyone planning to watch the 47th annual Halloween parade Sunday to donate an item of canned food or a paper product to restock the shelves of Loudoun Interfaith Relief. Collection boxes will be set up along the parade route from Ida Lee Park south on King Street to Catoctin Circle. Floats will start lining up at Ida Lee Park at 4:40 p.m. Judging will begin at 5, and the parade will start at 6. To avoid big crowds early in the route, pick a spot on South King Street. Wear your costume and collect candy. 703-771-1484.

UNISON HERITAGE DAY

This community event in Unison on Saturday will celebrate the state and federal historic district status of the village and the restoration of the 19th-century Unison Store building, which was vacant for five years and threatened with demolition. Unison, known as Union until 1829, is one of Loudoun County's oldest villages, settled by Quakers in the 1730s and 1740s at the same time as Waterford, Lincoln, Taylorstown and Hillsboro. There will be barbecues and country music, auctions (with an unusual array of more than 25 items, including composted manure, horseback riding lessons, champagne carriage rides, balloon and Ferrari racing car rides and a private jet to New York City), Halloween activities for children and tours of the store building. 1:30-5:30 p.m.; live auction at 4 p.m. 540-554-2010 or 540-554-8548.

"VALLEY APPLES"

The apple is . . . well, as American as apple pie. Long celebrated as "The American Fruit," apples have been an integral part of American culture since the founding of the first European settlements in the New World. "Valley Apples," an exhibit at the Loudoun Heritage Farm Museum, explores memories and experiences related to the past, present and future of apple growing in the Shenandoah Valley and Blue Ridge regions of Virginia through photographs and interviews with apple growers and workers, representatives of the apple industry and grass-roots historians. 10 a.m.-5 p.m. Tuesdays-Saturdays, noon-5 p.m. Sundays, through July 9, at the museum, Claude Moore Park, Heritage Farm Lane, Sterling. $5, adults; $4, seniors; $3, ages 2-12; free, 1 and younger. 703-421-5322.

WHAT DO YOU CARRY, SOLDIER?

Civil War soldiers walked more but carried less than today's backpackers. Meet a Rebel soldier and find out what he carries in his haversack to sustain himself in camp and in battle. 2:15-3:45 p.m. Saturday. At 6:30-7:30 p.m., meet a Confederate soldier and ask questions about his experiences in the army. Bring a blanket or lawn chair. Roast marshmallows. Sky Meadows State Park, 11012 Edmonds Lane, Delaplane. $4 per vehicle. 540-592-3556.

An exhibit at Loudoun Heritage Farm Museum highlights the humble apple.