Washington, DC: William Alanson White Psychiatric Foundation, [1948?]. Small quarto, (viii),147 pp, cream cloth, text printed in double columns on yellow paper. Endpapers browned in gutters (front and rear), cream cloth lightly soiled, bumped to corners, spine lightly darkened, else very good tight and unworn copy, no owner marks. This second printing adds a new foreword by the author and a critical appraisal of the theory by Patrick Mullahy. "Reprinted from Psychiatry: Journal of the Biology and Pathology of Interpersonal Relations, Volume Three, Number One, February 1940 and Volume Eight, Number Two, May 1945." The copyright notice on verso of title leaf is rubber stamped.