The Whittaker Chambers Farm, also known as Pipe Creek Farm, was the home "of Whittaker Chambers, an ex-Communist whose revelations about his past espionage activities with Alger Hiss, a former State Department official, had major political repercussions after World War II. Here Chambers turned over the "Pumpkin Papers" implicating Hiss and later wrote 'Witness,' his best-selling autobiography." It was declared a National Historic Landmark in 1988.