1. Extraction—When Justifiable in Connection With Orthodontia Operations;Guilford;Dent. Cosmos,1905
2. Malocclusion of the Teeth;Angle,1907
3. The Early Extraction of the First Permanent Molar as the Best Method of Preserving the Dentition as a Whole;Wilkinson;D. Record,1944
4. A Dental Health Service;Coleman;D. Record,1943
5. The Evolution of the Dental Occlusion From Fish to Man;Gregory,1941