Letter from Edwin L. Cox to William P. Clements, June 11, 1973. With attached Letter from C. Jackson Grayson, Southern Methodist University, School of Business Administration, June 8, 1973. SMU School of Business Administration Dean asks Cox to discuss with William P. Clements the possibility to get former President Richard Nixon to speak in Dallas; mentions Dallas as a strong power base because of William P. Clements, Tower, Bush, and Connally.