The following organizations need volunteer help for a day, a week or on a regular basis:

The Howard County Office on Aging needs volunteers to assist seniors lifting their luggage as they embark on a trip, from 9:30 to 11 a.m. Sept. 18, and when they return, from 4 to 5 p.m. Sept. 20, at Florence Bain Senior Center in Columbia. Refreshments provided.

The Office on Aging is also recruiting volunteers for its 50+ Expo on Oct. 15 at Wilde Lake High School in Columbia. Volunteers will help with exhibitor check-in, greeting of participants, the health fair, setup and cleanup, entertainment and more.

For more information, call Regina Jenkins at 410-313-1417 or e-mail rjenkins@co.ho.md.us.

The Domestic Violence Center needs teenage volunteers for a new program called Voices Against Violence, which will prepare young people to become peer advocates and educators on domestic violence, dating violence and healthy relationships. Training will be provided. For more information, call 410-997-0304 or e-mail outreach@dvcenter.org.

The Columbia Association is seeking teenagers to help with "Hear My Voice: Teen Day," to be held from 2 to 5 p.m. Sept. 26 at the Columbia Teen Center. Volunteers will staff food and registration tables, help with event planning and judge teen auditions. For more information, call Keisha Reynolds at 410-715-3102.

The Volunteer Center Serving Howard County and the Community Emergency Response Network will hold disaster preparedness orientation for Howard residents so they can help local nonprofit and government agencies with preparedness and recovery in an emergency. The orientations will be from 7 to 8 p.m. Sept. 21 at the Volunteer Center, 10221 Wincopin Cir., Columbia, and Sept. 27 at the East Columbia Library, 6600 Cradlerock Way, Columbia. 410-715-3179 or e-mail pam@volunteerhoward.org.

The Washington Area Bicyclist Association needs volunteers Sept. 18 to help with Giant Food BikeDC. Assistance is sought with tour marshaling, the Kids Bike Rodeo and rider registration, among other tasks. For more information, call 202-628-2500 or e-mail waba@waba.org.

Metropolitan Washington Ear, an organization that provides reading services for the blind and visually impaired, needs volunteers to read newspapers, magazines and other publications to be aired on its closed-circuit radio broadcast and dial-in telephone system. Recordings are made at the group's studios in Silver Spring. A brief audition is required. For more information, call 301-681-6636.

The Columbia Wildlife and Habitat Committee needs volunteers to monitor swans and waterfowl on Columbia lakes. For more information, call Sue Neri at 410-381-7140 or e-mail asn6672@aol.com.

The Family Tree, a child abuse prevention agency, needs volunteers to answer calls to its hotline, teach parenting classes, help with Parents Anonymous groups and assist in nurturing children. Programs and offices are in Anne Arundel, Baltimore, Harford, Howard and Prince George's counties. For more information, call Stephanie Jacobs at 410-889-2300 or go to www.familytreemd.org.

The Foreign-Born Information and Referral Network needs volunteers to provide group and individual English tutoring and to help staff members with activities. For more information, call Don Downing at 410-992-1923, Ext. 14, or e-mail ddowning@firnonline.org.

Meals on Wheels of Central Maryland needs volunteers to deliver meals to homebound people once or twice a month. For more information, call 410-730-9476 or e-mail volunteer@mowcm.org.

The Patapsco Female Institute Historic Park seeks docents to give tours and assist with programs and activities at the park and Mount Ida Visitor Center at the former 19th-century school for girls. Training will be provided. For more information, call 410-465-8500 or e-mail fpfi@prodigy.net.

The Maryland Science Center at Baltimore's Inner Harbor needs volunteers to serve as greeters, exhibit-area assistants, science demonstrators and Imax Theater ushers. Volunteers must be at least 14 and able to serve one four-hour shift a month. Training sessions and orientation will be provided. For more information, call Tony Washington at 410-545-5894 or e-mail twashington@mdsci.org.

The Howard County Library needs volunteers at each of its six branches to sort, shelve and check in materials. Applications are available at each branch. For more information, call Elaine Lawrence at 410-313-7881 or e-mail lawrence@hclibrary.org.

Cars for Careers needs two volunteers to help its executive director. The nonprofit organization accepts automobiles, repairs them and donates them to low-income Howard County residents. For more information, call Bill O'Connor at 301-497-6287.

The WeCare Team, a joint program of the Volunteer Center Serving Howard County and several Howard County elementary schools, needs workers to help elementary school students several hours a month. For more information, call 410-715-3172 or e-mail antoinette@volunteerhoward.org.

The Howard County Police Department's Victim Assistance Section, which provides crisis intervention, support and referral services to crime victims, needs two people for general office duties. Applicants must pass a background investigation. For more information, call Kathleen Coursey at 410-313-3712.

The department also needs volunteers for its chaplain program. Applicants must complete a county government job application and personal history questionnaire and undergo a background investigation. For more information, call Cpl. James Capone at 410-313-2203.

The Make-A-Wish Foundation of the Mid-Atlantic needs wish granters for children fighting life-threatening illnesses. A background check is required, and volunteers will be trained. For more information, call 301-962-9474 or e-mail jbecker@wish.org.

Days End Farm Horse Rescue in Lisbon needs volunteers to help care for the more than 100 horses, donkeys and mules it takes in each year. Students 12 and older can receive credit toward school community service requirements. For more information, call Kathy Schwartz at 410-442-1564.

The Therapeutic Riding Center in Glenwood needs people to help physical therapists by walking next to horses with riders, leading horses, and grooming and tacking them. For more information, call 410-489-5100 or e-mail cjv10@home.com.

-- Compiled by ALICIA CYPRESS

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Details: Items, which are printed weekly on a space-available basis, are from nonprofit groups. The deadline is 14 days before publication.