Christmas in April needs house captains to act as liaisons between the program's administrators and homeowners and to schedule repair work. Local businesses are asked to contribute supplies for carpeting, electrical work, landscaping, paint, plumbing and roofing. 301-868-0937.

The Family Tree of Maryland needs people to help prevent child abuse and neglect by working to strengthen and educate families. Volunteers are needed to mentor teenage parents and families, teach parenting classes, assist with support groups, direct children's programs and staff a 24-hour crisis and referral hot line. Training provided. 301-209-5254.

The House of Ruth of Maryland needs people with clerical, legal and writing skills to staff their Upper Marlboro and Hyattsville courthouse offices. Volunteers provide information to victims of domestic violence and assist lawyers on protective-order hearings and divorce and custody cases. At least four hours a month is required. Call Monica Player at 301-699-7790.

The John M. and Sara R. Walton Foundation Inc. seeks people interested in horses, coaches, harnesses and carriage-making tools to help research, maintain and interpret 16 historic vehicles at the new Carriage Museum at Poplar Hill on His Lordship's Kindness, a National Historic Landmark in Clinton. 301-856-0357.

Maryland-National Capital Park Police accept donations of used cell phones, cell phone batteries and chargers in any condition for use in the domestic violence program. Phones are reprogrammed with emergency phone numbers and loaned to women considered at risk for domestic violence. Donations tax-deductible. Call Capt. Barry Bratburd, 301-429-5653.

Prince George's Volunteer Center announces its annual essay contest on service learning for graduating seniors with a minimum 2.5 grade-point average and all service learning hours. Type or print a 200-word essay on the importance of volunteering and service learning and include two letters of recommendation from teachers, counselors or civic or religious leaders. Winning essays will be published in the awards program for the annual Affair of the Heart event in March. Applications due by Feb. 28. 301-699-2800.

-- Barbara Hinton

If you want to volunteer, contact the agencies directly. If you have an item for Volunteers, e-mail it to pgextra@washpost.com; fax to 301-952-1397; or write to Volunteers, Prince George's Extra, The Washington Post, 14402 Old Mill Rd., Suite 201, Upper Marlboro, Md. 20772.