Over 40 years as America's only national park for the performing arts, Wolf Trap has presented performances by hundreds of important and well-known artists at the Filene Center. The famed ballet dancer Mikhail Baryshnikov first performed at Wolf Trap in 1976; this autographed publicity photograph dates from a 1995 appearance with the White Oak Dance Project. Obtaining original signatures of all performers on their photos and programs is a tradition that Wolf Trap has maintained since the Filene Center opened in 1971.