Miguel Botafogo performs Argentinean blues on the guitar, and Bruce Ewan plays the blues on the harmonica in an open-air concert 6:30 p.m. Saturday on the lawn of the Manassas Museum, 9101 Prince William St., Manassas. Free. 703-330-2787.
'A Touch of Color'
Shirley Hales shows her love of the outdoors in her watercolors, and the husband-and-wife team of Jack and Bette Conley creates a display of stained-glass works. 11 a.m.-5 p.m. daily, Tuesday through Sept. 6. Artists' Undertaking Gallery, 309 Mill St., Occoquan. Free. 703-494-0584.
Two artists share the spotlight with a combination of oils and acrylic paintings. Chuck Glover uses a mix of cultural icons, and Charles Leake takes his cues from bucolic country living. 10 a.m.-5 p.m. Monday-Friday, 1-5 p.m. Saturday, starting tomorrow through Aug. 14. Center for the Arts, Caton Merchant Family Gallery, 9419 Battle St., Manassas. Free. 703-330-2787.
'Letters Home RFD'
Inspired by letters sent from faraway places, Denise Shamoun Phalan's exhibit displays miniature paintings on the backs of envelopes, which are mounted between glass with a portion of the letters protruding from the open edge. 11 a.m.-4 p.m. Tuesday-Friday, 11 a.m.-5 p.m. Saturday and noon-5 p.m. Sunday, starting Tuesday through Sept. 6. Loft Gallery, 313 Mill St., Occoquan. Free. 703-490-1117 or www.loftgallery.org.