@en|Scanning of an April 23, 1938 [[Parker]] advertising for the [[Vacumatic]] model. Published on ''Collier's''. Retouched by the author for a better sharpness. Date on the sheet back. | @en|Scanning of an April 23, 1938 [[Parker]] advertising for the [[Vacumatic]] model. Published on ''Collier's''. Retouched by the author for a better sharpness. Date on the sheet back. |