PERSONALITY DEVELOPMENT: A Practical Self-Teaching Course (14 volume set in a protective cardboard box). By Estelle B. Hunter, Personal Improvement Guild, New York, 1946.
 
Self-Help
Vintage from the 1940s
 
Originally published as a five-volume hard cover set. This set of 14 volumes comprises the following titles:
 
Volume 1 - Good Posture;
Volume 2 - Physical Fitness;
Volume 3 - Mental Health;
Volume 4 - The Well-Dressed Woman;
Volume 5 - The Well-Dressed Man;
Volume 6 - Speech Improvement;
Volume 7 - Social Conversation;
Volume 8 - Business English;
Volume 9 - Know Your Work;
Volume 10 - A Background of General Knowledge;
Volume 11 - Increasing Mental Efficiency;
Volume 12 - Character: The Keystone of Personality;
Volume 13 - Good Manners;
Volume 14 - The Principles You Live By
 
Softcover. Nice fourteen volume set in a protective cardboard case. Each volume is about forty pages in length. Illustrated.