Brother Samuel L. Lassiter was also a charter member of Xi chapter at Howard University.  He was appointed as Province Polemarch at the 29^th Grand Chapter meeting in San Antonio, Texas in 1939 by then-Grand Polemarch, James E. Scott.  Professionally, Brother Lassiter was a First Vice-President and Auditor for the Western Mutual Life Insurance Co. and served as an NCAA Football Official in the Southwestern Conference.  He served as Province Polemarch from 1939 to 1942.

The Dallas Alumni Chapter served, for a second time, as host chapter for the 11th Southwestern Province Council Meeting on April 4 – 6, 1947.

As the province grew, so to did the influence of the Dallas Alumni Chapter.  The chapter hosted its third Southwestern Province Council on April 15 – 17, 1960.  The Polemarch of the chapter during this 24^th Province Meeting was Dr. Emmett J. Conrad.