Manassas farmers market, 7:30 a.m.-1 p.m., Loy E. Harris Pavilion, 9201 Center St., and 7:30 a.m.-1 p.m. Saturdays, Parking Lot B, West Street (next to the train station visitors center). 703-361-6599 or www.visitmanassas.org.
“Operation Urgent Fury: Invasion of Grenada,” exhibit featuring photographs and artifacts chronicling the multinational invasion of the island of Grenada. 9 a.m.-5 p.m. daily, through May 15, National Museum of the Marine Corps, 18900 Jefferson Davis Hwy., Triangle. Free. 877-635-1775.
Novant Health Auxiliary fundraiser, books, games and tupperware for sale; proceeds benefit the auxiliary. 7 a.m.-7 p.m. Thursday, 7 a.m.-4 p.m. Friday, Novant Health Prince William Medical Center Medical Building 1, 8650 Sudley Rd., Manassas. Free. 703-369-8173.
AARP income-tax preparation help, for seniors and low-to-moderate income taxpayers, with trained volunteers. Noon-8 p.m. Thursday, 10 a.m.-6 p.m. Monday, Bull Run Regional Library, 8051 Ashton Ave., Manassas. Free. 703-792-4530.
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, discuss “Silver Sparrow,” by Tayari Jones. 7 p.m., Potomac Community Library, 2201 Opitz Blvd., Woodbridge. Free. 703-494-8126.
“Light Horse Harry Lee” talk, historian Christopher George discusses “Two Horsemen of the Revolution: Virginia’s Light Horse Harry Lee Vs. Britain’s Banastre Tarleton.” 7 p.m., Old Manassas Courthouse, 9248 Lee Ave., Manassas. Free. 703-792-4754.
Navy Band Sea Chanters, the choral group performs Broadway tunes, contemporary and patriotic music. 7 p.m., Graham Park Middle School, 3613 Graham Park Rd., Triangle. Free. 202-433-3366.
Sexual Assault Victims Advocacy Service anniversary, featuring an art show, author Gina Pincosy and a one-hour performance of a piece titled, “Behind the Mask: 30th Anniversary of ACTS Sexual Assault Victims Advocacy Service,” by the College of Visual and Performing Arts at George Mason University. 7:15 p.m., Hylton Performing Arts Center, 10960 George Mason Cir., Manassas. $50; active military, $35; students, $25. 703-993-7759.
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.
Government contracting training, introduction to “Small Business Innovation Research” and “Small Business Technology Transfer Research,” presented by the Center for Innovative Technology and the U.S. Small Business Association. 8:30-11:45 a.m., Ben Lomond Community Center, 10501 Copeland Dr., Manassas. Free, registration required. 703-335-2500.
Civil War “encampment,” historians interpret lives of Confederate soldiers. 10 a.m.-4 p.m. Friday-Sunday, Ben Lomond Historic Site, 10321 Sudley Manor Dr., Manassas. $5. 703-367-7872.
“Don’t Dress for Dinner,” Center for the Arts’ Rooftop Productions performs the comedy about mistaken identity. 8 p.m. Friday-Saturday, Candy Factory, Kellar Theater, 9419 Battle St., Manassas. $18; seniors and students, $15. 703-330-2787 or www.center-for-the-arts.org.
Michael B. Platt artworks, focusing on digital imagery and book art. 10 a.m.-5 p.m. Mondays-Fridays, 1-5 p.m. Saturdays, through April 25, Center for the Arts, Caton Merchant Family Gallery, 9419 Battle St., Manassas. Free. 703-330-2787 or www.center-for-the-arts.org.
Rippon Lodge plant clean-up day, remove invasive plants, plant and prune meadow grass, pick up trash, spread mulch and more. Sponsored by the Prince William County Department of Public Works and the Historic Preservation Division. 9 a.m.-2 p.m., Rippon Lodge, 15520 Blackburn Rd., Woodbridge. 703-499-9812.
“Anything Goes” exhibit reception, photography and digital paintings by David and Jane Ernst of Springfield and fused glass by David and Dale Barnes of Sterling, Reception, 1-5 p.m. Saturday; exhibit hours, 11 a.m.-5 p.m. daily, through May 5, Artists’ Undertaking, 309 Mill St., Occoquan. Free. 703-494-0584.
“Duets Four” exhibit reception, painter Susan Lawrence Norman and sculptor Gwen Harrison Lockhart use a classical approach that complements one another’s works. Reception, 1-4 p.m. Saturday; exhibit hours, 11 a.m.-4 p.m. Tuesdays-Fridays, 11 a.m.-5 p.m. Saturdays and noon-5 p.m. Sundays, through May 4, Loft Gallery, 313 Mill St., Occoquan. Free. 703-490-1117.
Potomac River blockade history tour, on a pontoon boat, a historian discusses the significance of the Confederate blockade along the Potomac during the Civil War. Lunch is included. Sponsored by the Prince William County Historic Preservation Division. 10 a.m.-1 p.m., Leesylvania State Park, 2001 Daniel K. Ludwig Dr., Woodbridge. $40, reservations required. 703-792-4754.
Tax talk, learn about various tax-related topics. Spanish speakers available. 10 a.m., H&R Block, 7775 Sudley Rd., Manassas. Free. 703-369-1040.
Bristow nature trail walk, learn about native plants and animals on a guided walk. 1 p.m., Brentsville Courthouse Historic Centre, 12229 Bristow Rd., Bristow. $5. 703-365-7895.
Manassas writers group, writers provide comments on one another’s works. 2 p.m., Bull Run Regional Library, 8051 Ashton Ave., Manassas. Free. 703-792-4500.
Antique military vehicles display, antique jeeps, trucks and other old vehicles, provided by the Washington Area Collectors of Military Vehicles/Blue and Gray Military Vehicle Trust. 9 a.m.-2 p.m., National Museum of the Marine Corps, 18900 Jefferson Davis Hwy., Triangle. Free. 877-635-1775.
“Caring Bunny” for autistic children, for children with autism or other sensory processing disorders, visit with the Caring Bunny in a sensory-friendly environment. 9-10:30 a.m., Potomac Mills, Neighborhood 1, 2700 Potomac Mills Cir., Woodbridge. Free. 703-490-5948.
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.
Job search network group and discussion, 1-3 p.m. Mondays, House of Mercy, 8170 Flannery Ct., Manassas. Free. 703-659-1636.
Monday Afternoon book club, discussion of “A Land More Kind Than Home,” by Wiley Cash. 1 p.m., Chinn Park Regional Library, 13065 Chinn Park Dr., Woodbridge. Free. 703-792-4800.
“The Uncle Devin Show,” interactive musical featuring the percussionist and his sidekick “Mr. Grasshopper.” 7 p.m., Central Community Library, 8601 Mathis Ave., Manassas. Free. 703-361-8211.
“Reflections” exhibit, artworks by Osbourn High School students. 10 a.m.-5 p.m. Tuesdays-Sundays, through April 21, Manassas Museum, 9101 Prince William St., Manassas. Free. 703-368-1873.
Latino Reads group, discussion of “The House on Mango Street,” by Sandra Cisneros. 7 p.m., Potomac Community Library, 2201 Opitz Blvd., Woodbridge. Free. 703-494-8126.
Friends of Leesylvania Park, regular meeting, new members welcome; the group raises money and supports park programs such as the Junior Rangers, free kids fishing tournaments and Haunted History hikes. 7:30 p.m., Leesylvania State Park, 2001 Daniel K. Ludwig Dr., Woodbridge. Free. 703-583-6904 or firstname.lastname@example.org.
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.
National Active and Retired Federal Employees, meeting for Chapter 356. Lunch at 11:30 a.m.; meeting begins at noon, Hibachi Buffet and Sushi, 8121 Sudley Rd., Manassas. Free; attendees pay for their lunch. 703-361-4677.
Central Reads book club, discusses “The Guernsey Literary and Potato Peel Pie Society,” by Mary Ann Shaffer and Annie Barrows. 1 p.m., Central Community Library, 8601 Mathis Ave., Manassas. Free. 703-361-8211.
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.
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