According to John Ray, Jr. (in VN's novel Lolita, 1955, the author of the Foreword to Humbert Humbert's manuscript), he had just been awarded the Poling Prize for a modest work (“Do the Senses make Sense?”) wherein certain morbid states and perversions had been discussed.
The Poling Prize seems to hint at Linus Pauling (1901-94), an American scientist who was awarded the Nobel Prize in Chemistry in 1954. Humbert Humbert’s landlord, Professor Chem, teaches chemistry at Beardsley College: