The 26th annual Mason District Park Festival needs volunteers to sell tickets for children's games, greet festival-goers, staff an information booth and work as stagehands. Volunteers work a minimum two-hour shift between 10 a.m. and 4 p.m. Sept. 24 at Mason District Park, 6621 Columbia Pike, Annandale. Call Fairfax County Supervisor Penelope A. Gross (D-Mason) at 703-256-7717.

The Arc of Northern Virginia needs volunteers to organize donations, arrange items on shelves and assist customers at Yesterday's Rose thrift store at 9960 Main St. in Fairfax. The store is open 10 a.m.-6 p.m. Monday-Saturday and 10 a.m.-5 p.m. Sundays. Call Lynn Ruiz at 703-532-3214, Ext. 213.

U.S. Botanic Garden Conservatory needs volunteers to help with visitor information services, activities for children and families, hands-on discovery stations and guided tours. Weekday and weekend openings are available. Volunteer orientation will be held from 9 a.m. to 3 p.m. Sept. 17. To register, call Mary Chor at 202-226-1047.

Down Syndrome Association of Northern Virginia needs volunteers to help with its inaugural buddy walk and festival on Sept. 24. Volunteers will help set up, clean up, manage the flow of the walk, assist with the craft area and provide other general help. For more information, visit www.dsanv.org. To volunteer, call Beth Baroody at 703-815-1617.

Reston Community Center and the Reston Association will hold their annual Volunteria volunteer fair from 6 to 8 p.m. Sept. 22 at Reston Community Center at 2310 Colts Neck Rd. Learn about services and volunteer opportunities in the community from area organizations including Reston Community Center and its Senior Academy, Reston Association, Reston Multicultural Festival planning committee, Reston Regional Library and more. Call 703-476-4500.

-- Compiled by JEAN MACK

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