“Operation Urgent Fury: Invasion of Grenada,” photographs and artifacts chronicling the invasion of Grenada. 9 a.m.-5 p.m. daily, National Museum of the Marine Corps, 18900 Jefferson Davis Hwy., Triangle. Free. 877-635-1775.
Dale City farmers market, 10 a.m.-1 p.m., Dale City Commuter Lot (behind Center Plaza Shopping Center), Dale Boulevard. Free. 703-670-7112, Ext. 227, or www.pwcparks.org.
Herblock exhibit, “The Long March” features work by the late Washington Post editorial cartoonist Herb Block. The exhibit chronicles the Civil Rights movement. 10 a.m.-5 p.m. Tuesdays-Sundays, Manassas Museum, 9101 Prince William St., Manassas. $5; seniors and children, $4. 703-368-1873.
“Zimnii Prasdnik (Winter Festival),” ribbon embroidery by Tatiana Harr of Fairfax Station and turned wood by Bob Horowitz of Falls Church. 11 a.m.-5 p.m. daily, through March 3. Artists’ Undertaking, 309 Mill St., Occoquan. Free. 703-494-0584.
Lucasville School open house, in celebration of African American Heritage Month, the one-room schoolhouse will be open to visitors. 11 a.m.-4 p.m. Saturdays and Sundays, through Feb. 23, Lucasville School, 10516 Godwin Dr., Manassas. Free. 703-365-7895.
Author Linda Johnston, the Gainesville resident discusses her book “Hope Amid Hardship: Pioneer Voices from Kansas Territory.” 2 p.m., Manassas Museum, 9101 Prince William St., Manassas. Free. 703-368-1873.
Bingo, proceeds support local veterans. 2 p.m. Sundays, 7:15 p.m. Mondays, Woodbridge American Legion, 3640 Friendly Post Lane, Woodbridge. $10 minimum. 703-494-4304.
Ballroom dancing, Waltz Valentine’s Day dance. Lessons followed by music and dancing. 3:30-6 p.m., Candy Factory, Kellar Theater, 9419 Battle St., Manassas. Lesson and dance, $15; open dance, $10. 703-330-2787 or www.center-for-the-arts.org.
Central Area student art exhibit, works of art by elementary, middle and high school students from the central area of the county. 7 a.m.-6 p.m. weekdays, through March 14, Edward L. Kelly Leadership Center, 14715 Bristow Rd., Manassas. Free. 703-791-8709.
“The Underground Railroad Quilt Codes, Fact or Fiction?” an exhibit of quilts designed and created by Sharon Tindall in honor of Black History Month. 8 a.m.-9 p.m. Mondays-Thursdays, 8 a.m.-5 p.m. Fridays, 9 a.m.-1 p.m. Saturdays, through Feb. 28, Northern Virginia Community College, 6901 Sudley Rd., Manassas. Free. 703-257-6657.
Job search network group, in addition to networking, weekly meetings will cover various topics related to the job search process. 1-3 p.m. Mondays, House of Mercy, 8170 Flannery Ct., Manassas. Free. 703-659-1636.
Monday Afternoon Book Club, the group discusses “Dear Life” by Alice Munro. 1 p.m., Chinn Park Regional Library, 13065 Chinn Park Dr., Woodbridge. Free. 703-792-4800.
AARP income-tax preparation help, for seniors and low- to moderate-income taxpayers, with trained volunteers. 6 p.m. Mondays, 10 a.m. Tuesdays, Bull Run Regional Library, 8051 Ashton Ave., Manassas. Free. 703-792-4530.
Mystery book club, the group discusses “Crawl Space” by Sarah Graves. 7 p.m., Central Community Library, 8601 Mathis Ave., Manassas. Free. 703-361-8211.
Prince William Community Band, rehearsal, for musicians 19 and older, no auditions necessary. 7:30 p.m., Saunders Middle School, 13557 Spriggs Rd., Manassas. Free. 703-791-4119 or www.pwcb.org.
Pre-K Tuesday, songs, stories and crafts for children ages 3-5 with a caregiver. 10 a.m., Manassas Museum, 9101 Prince William St., Manassas. $10. 703-368-1873.
Prince William County Genealogical Society, Larry Payne discusses Fauquier family cemeteries from the Revolutionary War. New members welcome. 10 a.m., Hillendale Fire Station, 13511 Hillendale Dr., Dale City. Free. 703-897-6743.
Lunch and learn about retirement living, a lunch and tour of the retirement community. 11 a.m.-1 p.m., Westminster at Lake Ridge, 12191 Clipper Dr., Lake Ridge. 703-496-3440.
Historical fiction book discussion group, the group discusses “The Buddha in the Attic” by Julie Otsuka. 1 p.m., Potomac Community Library, 2201 Opitz Blvd., Woodbridge. Free. 703-494-8126.
Bull Run BookTalkers, the group discusses “The House Girl” by Tara Conklin. 7 p.m., Bull Run Regional Library, 8051 Ashton Ave., Manassas. Free. 703-792-4530.
Prince William County Bar Association Legal Series, this month’s topic is landlord/tenant issues. 7 p.m., Chinn Park Regional Library, 13065 Chinn Park Dr., Woodbridge. Free. 703-792-4800.
Writers of children’s literature, new group members are welcome to share their writings and offer encouragement and constructive criticism. 7 p.m., Bull Run Regional Library, 8051 Ashton Ave., Manassas. Free. 703-792-4530.
English Conversation Club, new speakers of English practice their skills. 11 a.m. and 7 p.m., Chinn Park Regional Library, 13065 Chinn Park Dr., Woodbridge. Free. 703-792-4800.
“The Rosa Parks Story,” a screening of the movie in honor of Black History Month. 12:30 p.m., Woodbridge Senior Center, 13850 Church Hill Dr., Woodbridge. Free. 703-792-5081.
Prince William County History, Virginiana librarian Don Wilson shares his favorite historical stories. 2 p.m., Bull Run Regional Library, 8051 Ashton Ave., Manassas. Free. 703-792-4530.
Arabic language class, beginning level Modern Standard Arabic class. 7 p.m. Wednesdays, Chinn Park Regional Library, 13065 Chinn Park Dr., Woodbridge. Free. 703-792-4800.
Lake Ridge Toastmasters Club, an open house for Lake Ridge Club 8913. 7:30 p.m., Tall Oaks Community Center, 12298 Cotton Mill Dr. $62 membership fee. 703-491-3020.
AARP income-tax preparation help, for seniors and low- to moderate-income taxpayers, with trained volunteers. 10 a.m.-2:30 p.m. Thursdays-Fridays, Chinn Park Regional Library, 13065 Chinn Park Dr., Woodbridge. Free. 703-792-4800.
Mommy Meet Up: Victorian Valentines, refreshments and socialization while creating a Victorian Valentine’s Day card. Activities available for children. 10 a.m., Leesylvania State Park, 2001 Daniel K. Ludwig Dr., Woodbridge. Free. 703-583-6904.
Spanish chat, bring lunch and practice speaking Spanish. Noon-2 p.m., Central Community Library, 8601 Mathis Ave., Manassas. Free. 703-361-8211.
African American book group, participants discuss “Quiet Strength: the Faith, the Hope, and the Heart of a Woman who Changed a Nation” by Rosa Parks and Gregory Reed. 7 p.m., Potomac Community Library, 2201 Opitz Blvd., Woodbridge. Free. 703-494-8126.
Thomas Jefferson Toastmasters Club, regular meeting. 7:30 p.m., Good Shepherd United Methodist Church, 14999 Birchdale Ave., Dale City. $66 annual dues. 703-590-2926.
Toastmasters International, Woodbridge club. 7:30 p.m., Ebenezer Baptist Church, 13020 Telegraph Rd., Woodbridge. $39 membership fee. 703-731-2120.
Parents’ Night Out, dinner, a movie, and crafts and snacks for children. Harvest Life Changers Church, 14401 Telegraph Rd., Woodbridge. $15; each additional child, $10. 703-490-4040.
Valentine’s Day dinner, 7 p.m., Lake Ridge Baptist Church, 12450 Clipper Dr., Lake Ridge. $15. 703-494-8413.
Manassas farmers market, 10 a.m.-2 p.m. Saturdays, Parking Lot B, West Street (next to the train station visitors center). 703-361-6599 or www.visitmanassas.org.
Taxpayer Identification talk, learn about filing an Individual Taxpayer Identification Number application. 10 a.m., H&R Block, 7775 Sudley Rd., Manassas. Free. 703-369-1040.
“The Underground Railroad Network to Freedom,” the program explores the Underground Railroad at Leesylvania State Park in honor of Black History Month. 11 a.m.-3 p.m., Leesylvania State Park, 2001 Daniel K. Ludwig Dr., Woodbridge. $5/car. 703-583-6904.
Preschool Open House, representatives from community, public and private preschools will answer questions, sponsored by the Lake Ridge Moms’ Club. Noon-2 p.m., Tall Oaks Community Center, 12298 Cotton Mill Dr., Lake Ridge. Free. 703-550-9597.
Science fiction book discussion, participants discuss “The Affinity Bridge: A Newbury and Hobbes Investigation” by George Mann. 2:30 p.m., Central Community Library, 8601 Mathis Ave., Manassas. Free. 703-361-8211.
Washington Metro Investment Club, an open house meeting. 4 p.m., McCoart Administration Building, 1 County Complex Ct., Woodbridge. Free. 703-801-1465 or email@example.com.
U.S. Navy Band Sea Chanters, 7 p.m., C.D. Hylton High School, 14051 Spriggs Rd, Woodbridge. Free. 202-433-3366.