Thursday 12 SENIOR CITIZENS CHRISTMAS PARTY, hosted by the Greater Waldorf Jaycees and Charles County Department of Community Services. Enjoy a holiday luncheon, entertainment, door prizes and holiday spirit. Bring canned goods to share with needy families. 10:30 a.m.-2 p.m., Jaycees Community Center, 3090 Crain Hwy., Waldorf. Free, but tickets are required and are available at the four county senior centers or by calling 301-934-5423 or 301-870-2015.

CHILDREN'S CHRISTMAS PARTY, sponsored by Leonardtown Library. All ages welcome. Enjoy holiday stories, crafts and carols. 6 p.m., Leonardtown Library, 23250 Hollywood Rd., Leonardtown. Free. 301-475-2846.

BLOOD DRIVE, sponsored by Calvert County Lions Club, noon-5 p.m., Prince Frederick Rescue Squad, Prince Frederick. 410-535-5230.

Friday 13 ANNUAL FRUIT SALE, held by the Calvert County Lions Club. Navel oranges, red grapefruit and tangelos for sale. All proceeds go to local charities. 10 a.m.-6 p.m. today, tomorrow and Sunday, Prince Frederick Rescue Squad, Prince Frederick. 4/5-bushel, $23; 2/5-bushel, $12.50. 410-535-0569.

Saturday 14 RE-USE BARN, operated by the Southern Maryland chapter of the Izaak Walton League of America and the Charles County Board of Commissioners to help keep usable items out of the landfill. Items include furniture, desks, household goods, games, books, old records, collectibles and more. Proceeds are reinvested in the community. 8 a.m.-2 p.m. Saturdays, weather permitting, 3810 Renner Rd., Waldorf. For information or to donate items, call 301-645-5349 or 301-645-9451.

Monday 16 DEADLINE FOR GIFT-WRAPPING CONTEST, held by Calvert County Parks and Recreation. Open to all ages. Wrap a gift at home and drop it by the Southern Community Center by 8 p.m. today. Categories include most original concept, most creative design, most neat wrapping techniques and most decorative design. Prizes awarded for first-, second- and third-place winners. All entries will be on display at the center tomorrow through Dec. 24. Southern Community Center, 20 Appeal Lane, Lusby. Free. 410-586-1101.

AGRICULTURAL DEVELOPMENT COMMISSION MEETING, refreshments available. 8 a.m., SMECO conference room, Burnt Store Road, Hughesville. Free. 301-870-2520 or 301-274-1922.

BLOOD DRIVE, held by Calvert County Chapter of the American Red Cross. 2-6 p.m., Giant Food, Fox Run Shopping Center, Prince Frederick. 410-535-5230.

CHRISTMAS CRAFT WRAP-UP, for third-graders and older children. Make a gift for someone special and wrap it. 4 p.m., Charlotte Hall Library, 37600 New Market Rd., Charlotte Hall. Free. 301-884-2211.

CLASSIC CHRISTMAS STORY TIME, for all ages. Enjoy classic stories and a visit from Santa. 6:30 p.m., Charlotte Hall Library, 37600 New Market Rd., Charlotte Hall. Free. 301-884-2211.

FILM DISCUSSION, on "In the Bedroom." 7 p.m., Leonardtown Library, 23250 Hollywood Rd., Leonardtown. Free. 301-475-2846.

Tuesday 17 HOLIDAYS AT THE WHITE HOUSE, travel through time and learn about the different presidents and first ladies and how they celebrated the holidays. Learn about the different decorating styles used throughout the White House and surrounding grounds. Presenter is Patricia Finigan, National Park Service ranger with the White House Visitors Center. 11 a.m., Richard R. Clark Senior Center, 1210 E. Charles St., La Plata. Free. 301-934-5423 or 301-870-2015.

HEALTH EXPRESS, the mobile unit from Southern Maryland Hospital Center will check blood pressure. Cholesterol testing also available. Pre-test fasting is recommended. 9:30 a.m.-1 p.m., Richard R. Clark Senior Center, 1210 E. Charles St., La Plata. Blood pressure check, free; cholesterol testing, $5. 301-934-5423 or 301-870-2015.

CHRISTMAS CRAFT DROP-IN, for children in grades 6-8. Drop in and make a holiday craft. 2-4:30 p.m., Leonardtown Library, 23250 Hollywood Rd., Leonardtown. Free. 301-475-2846.

TEEN READING AND GAME CLUB, for grades 6-8. Learn about new books and play games. 6:30 p.m., Lexington Park Library, 21677 FDR Blvd., Lexington Park. Free. 301-863-8188.

Wednesday 18 POETRY OPEN MIKE, hosted by Calvert Library. Present your original or favorite poetry in a friendly forum. 7 p.m., Calvert Library, Prince Frederick. Free. 410-535-0291 or 301-855-1862.

BOOK CLUB, held by Calvert Library. Discussion on "The Best Christmas Pageant Ever," by Barbara Robinson, a funny, memorable and outrageous celebration of the season. 2-3:30 p.m., Fairview branch, Route 4, Owings. Free. 410-257-2101.

NUTRITION TALK, "Beat the Gut Busters." Learn easy ways to avoid festive overindulgence. 10:30 a.m., Waldorf Jaycees Community Center, 3092 Crain Hwy., Waldorf. Free. 301-638-4420.

SOCIAL SECURITY DISCUSSION, learn all the updated information. Open to all, regardless of age. 9:30 a.m.-2:30 p.m., Richard R. Clark Senior Center, 1210 E. Charles St., La Plata. Free. 301-934-5423 or 301-870-2015.

CHRISTMAS SURPRISE, for all ages. Enjoy a traditional Christmas party. 6:30 p.m., Lexington Park Library, 21677 FDR Blvd., Lexington Park. Free. 301-863-8188.

Thursday 19 BOOK DISCUSSION GROUP, on "Wrinkle in Time," by Madeleine L'Engle. 7 p.m., Leonardtown Library, 23250 Hollywood Rd., Leonardtown. Free. 301-475-2846.

-- Bonnie Smith

Items are accepted on a space-available basis, from public and nonprofit organizations only, and must be received 14 days before the Thursday publication date. Submit information to: This Week, The Washington Post, 100 N. Oak Ave., La Plata, Md. 20646. Include event name, dates and times, exact address, cost and a publishable contact phone number. For more information, call 301-934-3513.