To all Edh~~, Columnists, Commen tc>tors - for IMMEDIATE RELEASE as feature article, letter-to-editor, or as background material for editorial writers. CHANGES By WILLIAM A. PATTERSON President, United Air Lines No. L-541 At the start of this century, the average man lived within walking distance or a brief street car or buggy ride from his place of employ ment. There was no automobile waiting at the curb for him to drive wherever he wished. Transit systems prosper...