sentences:  Graceland was declared a National Historic Landmark on March 27, 2006, also a first for a rock singer.Graceland is the second most-visited house in the U.S. after the White House, with over 650,000 visitors a year.Graceland Farms was originally owned by Stephen C. Toof, founder of S.C. Toof & Co., the oldest commercial printing firm in Memphis, who was previously the pressroom foreman of the Memphis newspaper, the "Memphis Daily Appeal".