2020-09-152020-09-151925-11-25https://repository.tcu.edu/handle/116099117/41169Letter from T. G. Cooke of the Perfect Voice Institute to Amon Carter offering voice lessons with the following handwritten note, "Dear Amon: Perhaps if you will take this course "Ma" and "Pa" would not object to your shouting"8.5x11 paperPrior written permission from TCU Special Collections required to use any document or photographFerguson, Miriam A. "Ma"Ferguson, James E. "Pa"Governor of TexasDocument