1. The White House Conference on Child Health and Protection;Hellman,1930
2. Growth and Development of the Child, Part II, Anatomy and Physiology;Hellman,1930
3. A Preliminary Study in Development as It Affects the Human Face;Hellman;Dental Cosmos,1927
4. Some Facial Features and Their Orthodontic Implication;Hellman;Am. J. Orthodontics and Oral Surgery,1939
5. The Face in Its Developmental Career;Hellman;Dental Cosmos,1935