The Washington Irish Folk Festival needs volunteers Sept. 4 and 5. The festival, which takes place at the Montgomery County Fairgrounds in Gaithersburg, needs volunteers in sales, hospitality, operations and site access. It also needs help in the community, crafts, family, animal and literary areas. Volunteers are asked to work at least one four-hour shift, and all volunteers will receive free admission to the festival on the day they work. For more information, call 301-654-0654.

Artrain, the nation's only traveling art museum on a train, needs volunteers to serve as guides during its five-day visit to Washington. Volunteer guides will welcome visitors and help them better understand the exhibit. Volunteers are needed July 21 to 23, 9:30 a.m. to 3 p.m., and July 24-25, 9:30 a.m. to 1:30 p.m. and/or 1 to 5:15 p.m. Volunteer training will be July 19 at 3 and 7 p.m. For more information or to volunteer, call Laurie Allison at 1-800-278-1917, Ext. 233.

The Humane Society of Southern Maryland seeks foster homes for dogs and cats, as well as adoption day helpers. For more information, call Jane Heller at 301-630-6110.

The Washington Bible College and Seminary needs volunteers to be tour guides, helpers, registration aides and gift-book stand workers during its Walk Through Washington Bible Seminar scheduled for July 26 to 30 and Aug. 2 to 6. Call Priscilla Boswell at 301-552-1400, Ext. 208.

The Retired Volunteer Service Corps of the University of Maryland at College Park has immediate openings for mature volunteers. Help is needed in the Career Center, the Concert Office, the English Editing for International Graduate Students office, the Learning Assistance Service, the Writing Center and the Art Center. For more information, call Jed Collard at 301-226-4750.

The American Cancer Society needs volunteer drivers for its Road to Recovery program in Prince George's County. Road to Recovery drivers take clients to and from medical appointments. Volunteers must have their own car and a good driving record. Training will be provided. For more information, call 301-993-9350.

Lutheran Social Services of the National Capital Area has opportunities in Prince George's County for volunteers to tutor foster children and to mentor newly arrived refugee families. Also needed are on-call volunteers, especially those with trucks and vans who can help pick up and move furniture for their AIDS and Refugee Programs. For more information, call Kathy Hadzibarjric at 202-723-3000, Ext. 203.

The Whitman-Walker Clinic of Suburban Maryland seeks volunteers to assist people living with HIV and AIDS. Volunteers are needed in the Buddy Program, the Speakers Bureau, legal services and reception and administration, as well as to serve as food delivery drivers and nursing home visitors. For more information, call 301-439-0731.

Bethel House, a welfare-to-work program in Brandywine, has volunteer opportunities available for people interested in assisting instructors with daily course work, mentoring, performing clerical duties and facilitating a class. For more information, call Maria Carrasquello at 301-209-5020.

Volunteers are needed to participate in the final legs of Stonewalk July 31 to Aug. 6. Stonewalk is the pulling of a 2,000-pound stone, which will serve as the first Memorial to the Unknown Civilians Killed in Wars, from the Peace Abbey in Sherburne, Mass., to Arlington National Cemetery. The stone was unveiled at the Peace Abbey in 1994 by Muhammad Ali, and began its journey July 4. Volunteers will be needed to pull the stone, which will travel on a specially built caisson to be pulled by as many as 70 people at once, when it arrives in the Washington area July 31, and every day thereafter until it reaches its destination Aug. 6. For more information or to volunteer, call 508-269-5433 or 508-259-8505.

If you would like to volunteer, please contact the agencies directly. If you would like to submit a notice for Volunteers, fax to 301-952-1397, e-mail to pgextra@washpost.com or write to Volunteers, Prince George's Extra, The Washington Post, 14402 Old Mill Rd., Suite 201, Upper Marlboro, Md. 20772.