1. Excerpts from the personal file of Ralston Paterson;Earle,1986
2. Hodges, P.C.: Tape recorded communication to J. A. del Regato, M.D. October 13, 1986.
3. Herbert M. Parker
4. The roentgenologic manifestations of primary parenchymal carcinoma of the lung. I parenchymal type;Kirklin;Am. J. Roentgenol.,1928