In a preface of the posthumous Magnum Opus, Origins of the Study of Human Growth, Edith
Boyd (1980), Richard Scammon and Edith Boyd in the Plan of Presentations listed six
methods of human growth to progressively the most sophisticated [our asides are noted in
the squared brackets]: Edith Boyd 1896-1977 Richard Scammon 1883-1952, Posthumous
edited by Bhim Sen Savara and John Frederick Schilke.