The first dozen seasons saw many performances and events of historical significance. In 1971, produced by the National Council for the Traditional Arts, the National Folk Festival was the first event at Wolf Trap to use the park grounds (versus Filene Center itself) for performances, and it set a precedent for other events at Wolf Trap to do the same. That same year, Richard Nixon became the first U.S. President to attend a Wolf Trap performance, viewing the Wolf Trap Company's performance of the "Musical Theater Cavacade" on August 12. In 1976, the Scottish Military Tattoo, a Bicentennial gift from Britain, performed at the Filene Center for capacity audiences including Britain's Prince Philip. Two years later, in 1978, the People's Republic of China's performing arts ensemble entertained Wolf Trap's audience with acrobatic troupes and dancers in one of the first cultural exchanges between China and the United States. From 1971 until the early 1980s, the National Folk Festival was held annually at Wolf Trap. In the 1970s, WETA-TV produced the television series "In Performance at Wolf Trap".