The sidewalk on North Queen Street between Burke and Martin streets will be the site of the final First Saturday Street Fair of the year. Melvin and Mary Edwards, formerly known as the Berkeley Travelers, will play music on guitar, mandolin and mouth harp. There also will be artists and crafters. Today, 10 a.m. North Queen Street between Burke and Martin streets, Martinsburg, W.Va. Go to www.artberkeley.org.
Interstate coin show
Buying, selling and trading of coins, currency, stamps and postcards. Today, 10 a.m. to 5 p.m.; Sunday, 11 a.m. to 4 p.m. Grand Venice Hotel, 431 Dual Highway, Hagerstown. Free.
"The Eyes of the Army: The Cavalry" features demonstrations of cavalry riding, weapons firing, sabre drill and bugling. Today and Sunday, 11 a.m. to 4 p.m. Harpers Ferry (W.Va.) National Historical Park. Park admission fee. Go to www.nps.gov/hafe.
Alan Heges will discuss "Fossils in Washington County" as part of Discovery Station at Hagerstown's Saturday Plus program. Today, 1 and 2:30 p.m. Discovery Station, 101 W. Washington St., Hagerstown. Free with museum admission of $5 to $7; free for members. Call 301-790-0076 or go to www.discoverystation.org.
The U.S. Marine Band's country music ensemble Free Country will perform as part of the annual military band series. Today, 6 to 7:30 p.m. Mather Training Center lawn, Fillmore Street, Harpers Ferry, W.Va. For information and directions, call 304-535-6298.
McBee/Hays Championship - 44-lap late models (last points race) plus late model sportsman and pure stocks. Today, 7 p.m. Hagerstown Speedway, 15112 National Pike, west of Hagerstown. $12, general admission, $20, pit pass, $17, reserved seating. Call 301-582-0640 or go to www.hagerstownspeedway.com.
The Showcase of Bands features Lumpy Jones, Gubment Cheese, Defyance, Faded-X, MC Young Einstein, Greg Trumpower and Mike Seibert. Light refreshments will be available. Sunday, 11 a.m. Doub's Woods Park arts pavilion, Hagerstown. Go to www.lumpyjones.com.
The Headliners will perform during the Pen Mar Park summer concert series. Sunday, 2 to 5 p.m. Pen Mar Park, Cascade. Free. Call 301-791-1551.