sentences:  This was followed by intensive study with Kathleen Crofton, who had been a student of Olga Preobrajenska, and who then became his principal teacher.Roger Tully joined Mona Inglesby’s company “The International Ballet", with which he toured Italy.Both Nicholas Sergueyev, who had been régisseur at the Maryinskii, as well as Leonid Massine were with Mona Inglesby at the time, and staged the original Maryinskii productions for her.