Elvis Presley's white grand piano and his 1955 contract with RCA Records are going up for auction in Memphis next month, with the piano expected to fetch more than $1 million, auctioneers said. The purchase agreement for the King of Rock ‘n' Roll's Graceland mansion, and a letter Presley wrote in 1955 to his then girlfriend shortly after entering the US army, are also among the highlights. The white Knabe piano was owned and played by Presley for a decade. The singer bought it in 1957 from the Ellis auditorium in Memphis.