Holy Trinity Catholic School 1435 Mallinckrodt St Saint Louis, MO 63107 Phone : (314) 231-9014 Business Category Schools Religious Schools Schools-Elementary Schools-Junior High Schools-Private & Parochial Holy Trinity Catholic Church 1435 Mallinckrodt St Saint Louis, MO 63107 Phone : (314) 231-9014 Holy Trinity Catholic Church Business Category Churches & Religious Organizations Schools Churches-Catholic Religious Schools Schools-Private & Parochial Government Offices & Public Schools Services           Elementary School, High School, Internet, Library