The National Geographic Hubbard Medallion is named after the first president of the National Geographic Society, Gardiner Greene Hubbard. It is the National Geographic Society's highest award and is conferred on persons who distinguish themselves by a lifetime of achievement in research, discovery, and exploration. This prestigious award was first presented to Arctic explorer Robert E. Peary in 1906.  
The Hubbard Medallion redesigned by Laura Gardin Fraser in 1951 is struck in 14 karat gold, weighs 474 grams and is 93 mm in diameter.  The medallion in my collection is struck in gilded bronze that gives it a similar look to that of the 14 karat gold medallion. The edge inscription on my medallion is "MEDALLIC ART CO.N.Y. BRONZE." Thus, it seems probable that my medallion was a trial strike, perhaps struck with the same dies used to strike the gold medallion.
According to Medallic Art Company historian and senior consultant D. Wayne Johnson on his databank, the redesigned Hubbard Medallion has a MACO die number of 1951-016.  This ingenious method of cataloging dies devised by D. Wayne Johnson himself signifies that the dies for the new Hubbard Medallion were the 16th job in 1951. (Incidentally, Medallic Art Company retains all the dies they ever used in an environmentally controlled die library).  That said the first recipient of the redesigned Hubbard Medallion and the 15th overall was Arctic explorer Donald B. MacMillan on January 9, 1953. Ironically, Commander MacMillan was an aide to the first Hubbard Medallion awardee, Robert E. Peary.
The obverse of the Hubbard Medallion features the Western Hemisphere seal of the National Geographic Society and the year of the National Geographic Society's founding in 1888 with an oak leaf cluster on each side of the date. On the reverse appear land, sea, and sky, races of man, animals, birds, and sea creatures. 
Of particular interest to me is a non-cited quote by Laura Gardin Fraser concerning her design of the Hubbard Medallion: "My idea in using animals was to have them represent, along with the races of man, the continents of the globe. I chose such creatures as would readily be recognized as having inhabited their respective regions from man's earliest remembrance."
"The hemispheres are those shown on the cover of the magazine the Northern, Southern and Eastern Hemispheres since the obverse shows our own Western Hemisphere as the seal of the National Geographic Society. A decorative element is two groupings of oak leaves on the obverse. They were also taken from the cover of the magazine."
Finally, when I examine a piece of medallic art I sometimes wonder what the sculptor of that medal or coin intended to communicate through it. I also believe that the said sculptor derives a certain degree of satisfaction when he or she sees the desired effect of their medallic art on its recipients. In some cases, the legacy and effect of a sculptor's work continues after their death. Such is the case with Laura Gardin Fraser (1889-1966) and the Hubbard Medallion.
The following is the story of a very proud woman whose great-great-great uncle received the Hubbard Medallion posthumously.
Matthew A. Henson was an Arctic explorer and right hand man of Robert E. Peary. Unfortunately for him, very few African Americans were recognized for their contributions in discovery and exploration in the early 1900s. In fact, evidence seems to suggest that Matthew Henson was the first human to stand on the geographic North Pole, not Peary. Then on November 28, 2000 some ninety-four years after Robert E. Peary was awarded the Hubbard Medallion, Matthew A. Henson finally received his long overdue recognition when he was posthumously awarded the Hubbard Medallion. 
Leila Savoy Andrade had been a security guard at the headquarters of The National Geographic Society for three years. Few people where she worked knew that she was the great-great-great niece of Arctic explorer Matthew A. Henson. When she showed up at the award ceremony in civilian cloths the president of the Society, John Fahey asked her, "What are you doing here?" She replied, "That's my uncle." Leila was one of nine family members to attend the ceremony and she was quoted as saying this about her uncle, "Everyone in the family always said great things about him when I was growing up." Somehow I believe that if Laura Gardin Fraser were alive today, she would be thrilled about this story and the role she played in it. 
6. The National Geographic Society Magazine, April 1953 pg. 564
8. The National Geographic Society Magazine, June 2000, "The Ties That Bind" A medal ceremony becomes a family affair