Importance of Sonic Boom Studies in Aviation Progress: Letter to Senator Monroney1964-06-04Monroney, A. S. Mike (Almer Stillwell Mike), 1902-1980http://rightsstatements.org/vocab/NKC/1.0/enghttp://congressarchives.org/record/CAC_CC_038_8_47_4_0031The letter is from John O. Brittain, the president of Brittain Brothers, who expresses his support for Sonic Boom Studies and believes it would be a mistake to call them off. He is proud that Oklahoma City is contributing to this progress in aviation. The letter is addressed to U.S. Senator Mike Monroney.