01
Skeletal maturity of children 6-11 years, United States: skeletal age (hand-wrist), onset of ossification, and bone-specific skeletal ages by chronological age and sex of boys and girls 6-11 years of age, as assessed by the health examination survey standard, based primarily on the Greulich-Pyle radiographic atlas
The earliest high-confidence catalog date in this author overview is 1974.