The Little Flower Missionary Society is the oldest organization at Saint Thomas Aquinas Parish, being four years older than the church. 

Our purpose is "to encourage, aid financially and spiritually, assist in furthering the activities of missionaries recognized by the Roman Catholic Church, and to generally aid in the spread of Roman Catholicism." 

Our motto is "Lend a Helping Hand When and Where Your Can." The charity of the Little Flower Missionary Society is well known. Besides helping foreign seminarians and local priests, members through the years have restored a West Dallas mission church, aided hurricane victims, donated food, clothing and toys to the poor, made First Communion dresses, established a seminary burse which still exits, and more.