Sunday 8 HOLIDAY OPEN HOUSE, with open shops and businesses, free horse-drawn carriage rides, refreshments and a visit from Santa. Sponsored by Historic Manassas Inc. 1-5 p.m., Old Town Manassas. 703-361-6599.

CRAFT SHOW AND OPEN HOUSE, sponsored by Birmingham Green. 1:30-3:30 p.m., 8605 Centreville Rd., Manassas. 703-257-0935.

Monday 9 HOME-BUYING SEMINAR, 7-8:30 p.m., Bull Run Regional Library, 8051 Ashton Ave., Manassas. Free; registration required. 703-792-6287.

MULTICULTURAL CELEBRATION, with crafts, food and displays; sponsored by the Prince William Public Library System. 7 p.m., Chinn Park Regional Library, 13065 Chinn Park Dr., Woodbridge. Free; registration required. 703-792-4800.

MANASSAS ART GUILD, 7 p.m., Century 21 Capital Realty, 8803 Sudley Rd., Manassas. 703-753-2783.

Tuesday 10 DIABETES SUPPORT, for patients and family members, sponsored by Potomac Hospital. 7 p.m., Potomac Center (next to the hospital), Suite 320, 2296 Opitz Blvd., Woodbridge. 703-221-2500.

LIBRARY STORY HOUR, for preschool groups of five or more, sponsored by the Prince William Public Library System. 10:30 a.m., Potomac Community Library, 2201 Opitz Blvd., Woodbridge. Free; registration required. 703-494-8126.

GMU INFORMATION SESSION, for students interested in transferring to George Mason University. 6 p.m., Room 202, Prince William Campus, George Mason University, 10900 University Blvd., Manassas. Free. 703-993-8375.

ALZHEIMER'S SUPPORT, sponsored by the Prince William Senior Center. 7 p.m., 13850 Church Hill Dr., Woodbridge. 703-497-0741.

BULL RUN TROUBADOURS, 7:30 p.m., Trinity Episcopal Church, Battle and Church streets, Manassas. 703-753-2249.

SEPTICS FOR SUBURBANITES, a discussion on maintaining septic systems, sponsored by the Virginia Cooperative Extension and Prince William Health District. 7-8:30 p.m., Bull Run Regional Library, 8051 Ashton Ave., Manassas. Free; registration required. 703-792-6285.

LIBRARY STORY HOUR, for preschoolers, sponsored by the Prince William Public Library System. 10:30 a.m., Chinn Park Regional Library, 13083 Chinn Park Dr., Woodbridge. Free. 703-792-4800.

WOODBRIDGE HOME-BUYING SEMINAR, 7-8:30 p.m., Chinn Park Regional Library, 13065 Chinn Park Dr., Woodbridge. Free; registration required. 703-792-6287.

Wednesday 11 LIBRARY STORY HOUR, for children 3-7, sponsored by the Prince William Public Library System. 4 p.m., Chinn Park Regional Library, 13083 Chinn Park Dr., Woodbridge. Free. 703-792-4800.

PRINCE WILLIAM CHESS CLUB, 7-9 p.m., Borders Books & Music, 2904 Prince William Pkwy., Woodbridge. 703-670-5887.

PARK AUTHORITY BOARD MEETING, 7 p.m., Prince William County Park Authority Headquarters, 14420 Bristow Rd., Manassas. 703-792-4296.

SENIORS PROGRAM, learn about SeniorNavigator.com, an organization that provides information about Virginia's health and aging resources, sponsored by the Prince William Public Library System. 9 a.m., Potomac Library, 2201 Opitz Blvd., Woodbridge. Free; registration required. 703-494-1826.

WRITERS GROUP, 7:30 p.m., Borders Books & Music, 2904 Prince William Pkwy., Woodbridge. 703-897-8100.

WINTER DECORATING CLASS, discover decorating with greenery; sponsored by the Prince William Public Library System. 7 p.m., Bull Run Regional Library, 8051 Ashton Ave., Manassas. Free; registration required. 703-792-4500.

DOUGH ORNAMENT WORKSHOP, for families, sponsored by the Manassas Park Department of Parks and Recreation. 7 p.m., Costello Park Recreation Center, 99 Adams St., Manassas Park. Free; registration required. 703-335-8872.

LAKE RIDGE TOASTMASTERS INTERNATIONAL, Lake Ridge Club No. 8913. 7:30 p.m., Tall Oaks Community Center, 12399 Hedges Run Dr., Lake Ridge. 703-494-5530.

Thursday 12 LIBRARY STORY HOUR, for children 4-6, sponsored by the Prince William Public Library System. 10:30 a.m., Bull Run Regional Library, 8051 Ashton Ave., Manassas. Free. 703-792-4500.

CANCER SUPPORT, for patients and family members, sponsored by Potomac Hospital. 7 p.m., Potomac Center (next to the hospital), Suite 320, 2296 Opitz Blvd., Woodbridge. 703-221-2500.

HOLIDAY CRAFT, make an ornament, sponsored by the Prince William Public Library System. 3 p.m., Potomac Community Library, 2201 Opitz Blvd., Woodbridge. Free; registration required. 703-494-8126.

LIBRARY STORY HOUR, for children, sponsored by the Prince William Public Library System. 10:30 a.m., Potomac Community Library, 2201 Opitz Blvd., Woodbridge. 703-494-8126.

HOLIDAY PUPPET SHOWS, sponsored by the Prince William Public Library System. 10:30 a.m., Bull Run Regional Library, 8051 Ashton Ave., Manassas; and 11 a.m., Central Community Library, 8601 Mathis Ave., Manassas. Free; registration required. 703-792-4500 and 703-361-8211.

BOOK DISCUSSION GROUP, for grades 4-6, sponsored by the Prince William Public Library System. 7 p.m., Chinn Park Regional Library, 13065 Chinn Park Dr., Woodbridge. 703-792-4800.

COOKIE DECORATING PROGRAM, for families and children, sponsored by the Prince William Public Library System. 7 p.m., Chinn Park Regional Library, 13065 Chinn Park Dr., Woodbridge. Free; registration required. 703-792-4800.

MYSTERY BOOK CLUB, sponsored by the Prince William Public Library System. 7 p.m., Bull Run Regional Library, 8051 Ashton Ave., Manassas. Registration requested. 703-792-4500.

Friday 13 LIBRARY MOVIES, for children 3-7, sponsored by the Prince William Public Library System. 10:30 a.m., Chinn Park Regional Library, 13065 Chinn Park Dr., Woodbridge. Free. 703-792-4800.

BACK DOOR FRIENDS, noon, River Woods Community Center, 16573 Nanticoke Rd., Woodbridge. 703-221-5513.

HOLIDAY PUPPET SHOW, sponsored by the Prince William Public Library System. 10:30 a.m., Bull Run Regional Library, 8051 Ashton Ave., Manassas. Free; registration required. 703-792-4500.

Saturday 14 BREAKFAST WITH SANTA, for children 10 and younger, sponsored by the Prince William Park Authority. 9 a.m. or 10:30 a.m., Dale City Recreation Center, 14300 Minnieville Rd., Dale City. $6; registration suggested. 703-670-7112.

RECOVERY INC., for people experiencing anxiety, depression, fear and other emotional problems. 10 a.m.-noon, Saturdays, Cokesbury United Methodist Church, 14804 Blackburn Rd., Woodbridge. 703-490-5423.

BILINGUAL STORY, in Spanish and English, for children, sponsored by the Prince William Public Library System. 11 a.m., Bull Run Regional Library, 8051 Ashton Ave., Manassas. 703-792-4500.

CHRISTMAS OPEN HOUSE, at the Weems-Botts Museum, sponsored by Historic Dumfries. 5-7 p.m., at the museum, Duke and Cameron streets, Dumfries. 703-221-2218.

CAROLING, a hayride through the city and holiday songs, sponsored by the Manassas Park Department of Parks and Recreation. 5:45 p.m., Costello Park Recreation Center, 99 Adams St., Manassas Park. Free; registration required. 703-335-8872.

CHRISTMAS PARTY, sponsored by the Coalition Against Hunger, Prince William County's food bank. 5-9 p.m., Haymarket Lodge 313, 8713 Jefferson St., Haymarket. Food or monetary donations requested before the event for distribution at the party to needy families. 703-754-1355.

MODEL RAILROAD SHOW, with displays from the Prince William County Model Railroad Club, sponsored by the Prince William Public Library System. 10:30 a.m.-4:30 p.m. Saturday and noon-4 p.m. Sunday, Chinn Park Regional Library, 13065 Chinn Park Dr., Woodbridge. 703-792-4800.

-- Compiled by Camille Ross

Items are accepted on a space-available basis from public and nonprofit organizations only, and must be received at least 14 days before the Sunday publication date. Submit information to: This Week, The Washington Post, 9420 Battle St., Manassas, Va. 20110. Include event name, dates and times, exact address, cost and a publishable contact phone number. For more information, call 703-392-1303.