PHW launches a new, free seminar series in compatible building materials, Limestone, Sycamores, and Preservation. The first seminar focuses on traditional mortars in restoration and repair, with guest speaker Jeff Price of Virginia Lime Works. The event will be held at 2 PM in the Old Town Event Center at 403 S. Loudoun St. and is expected to run approximately two hours. Light refreshments will be provided afterward. RSVP by March 3 to the PHW office by calling 667-3577 or e-mailing phwi@verizon.net.