The charter of the University of Dallas dates from 1910 when the Vincentian Fathers took that name for the Holy Trinity College they had founded five years earlier. Holy Trinity College closed in 1928 and the charter was placed with the Catholic Diocese of Dallas. In 1955, the Western Province of the Sisters of Saint Mary of Namur obtained it for the purpose of operating a new institution in Dallas that would absorb their junior college in Fort Worth, Our Lady of Victory. The University opened its doors to 96 degree-seeking students in September 1956, on a 1,000 acre tract of rolling hills northwest of the city of Dallas which is now part of Irving/Las Colinas. The Graduate School of Management, established in 1966, offers one of the largest MBA programs in the Southwest. The University enrolls more than 3,000 students from all over the United States and the world, divided roughly into 1,300 undergraduates and 1,700 graduate students.