Personality Development, a Practical Self-Teaching Course, Unit 4: Mind and Background

Estelle Belle Hunter (1885-?) wrote manuals better pronunciation and effective speech for the Better Speech Institute of America, including this five-volume "practical self-teaching course" on personality development "comprising health, posture, dress, grooming, voice and speech, conversation, social and business etiquette, self-confidence, poise, living and working with others, acquiring background, improvement of mind and character, achieving success and happiness."