Parker Advertisement, May 17, 1952, The Saturday Evening Post, Full Color, Parker 51,”Spring Gift Showing” demi & regular.

Parker Advertisement, September 4, 1913, Black and white,, 2 1/2 x6 ½ inches, #20, #42 1/2 Parker Lucky Curve fountain pens shown, “The Pen that Can’t Misbehave”

Parker Advertisement, Nov 1947, Full Color, 11x14, Santa's hand presenting "51" Fountain Pen with holly, "Take it from Santa Parker 51 is the world's most wanted gift pen"

Parker Advertisement, 1921, B&W, 2 1/2x14, Lucky Curve, cross section of feed, “capillary attraction”

Parker Advertisement, 1913, Black and white, 2.5"x7 inches, Parker Lucky Curve Jack Knife Safety, Geo Parker portrait, "I Know that you will like this handy little fountain pen"