EST33  Esterbrook Advertisement, November 1954, National Geographic, B&W, 7x10, 8 points, 3 pens, 1 set, Christmas, "Gift you can personalize".

EST30  Esterbrook Advertisement, March 1955, National Geographic, B&W, 7x10, 6 points, with cartoon people, 1 fountain pen shown, "For easier more comfortable writing".

EST27  Esterbrook Advertisement, November 1950, National Geographic, 7x10, B&W, 7 points, 2 fountain pens, 1 set, #444 pen set shown, "Give an Esterbrook Pen".

EST13  Esterbrook Advertisement, March 1950, National Geographic, B&W, 7x10, 5 points, 2 pens shown, "For the way you write".

EST11  Esterbrook Advertisement, December 1954, National Geographic, Full Color 7 x 10 8 points, 3 pens, & 2 pencils shown, "Gift for more comfortable writing".