[-- --]. PORSCHE, Dr. FERDINAND A.E. (19 ?-?). Photograph inscribed and signed ("F. Porsche"), by Werkfoto Porsche, n.p., n.d. [circa 19 ?]. 173 x 120 mm. (6 13/16 x 4¾ in.), inscribed on dark area of image (but legible). A shoulder-length portrait of the auto manufacturer, inscribed on the lower portion of the image: "To Bill Wood F. Porsche."