"Early in her career she became interested in accelerating improvement of teaching and teachers through organizations." She served on the Executive Committee of the Texas State Teachers Association in 1919 and organized and served as president of the Houston Teachers Association. She also formed the Houston Principals Association. In addition to Delta Kappa Gamma, Miss Bastian was active in the National Congress of Parents and Teachers and the National Education Association. She served one term as vice president of the Texas State Textbook Board.
"It is not surprising that Dr. Blanton selected her enterprising friend to share in establishing The Delta Kappa Gamma Society in 1929. Nor is it surprising that within five months Mamie Bastian had founded Gamma Chapter in
"Mamie Sue chaired several national committees: National Scholarship Fund (1936-38), National Permanent Fund (1936-1938), and Initiation (1932-1933). She was a member of a number of national committees including the one on Constitution (1929-30 and 1933-36), Membership (1930-36), Nominations (1930-33), Retirement Fund for Teachers (1930-31), Program (1934-40) and
"It was Miss Bastian who initiated the idea of the Birthday Luncheon, who encouraged lively Delta Kappa Gamma songs to add color to drab lives of teachers. Because Mamie dearly loved to sing, she always inspired others to join in the fun when she directed."
Mamie Sue Bastian died on