The Nazi racial theorist Hans F. K. Günther first defined "Nordic thought" in his programmatic book "Der Nordische Gedanke unter den Deutschen". The fact that Germans were not purely Nordic was acknowledged by Günther in his book "Rassenkunde des deutschen Volkes" (1922) ("Racial Science of the German People"), in which he described the German people as being made up of all five of his European racial categories: Nordic, Mediterranean, Dinaric, Alpine, and East Baltic. Most official Nazi comments on the Nordic race were based on Günther's works, and Alfred Rosenberg presented Günther with a medal for his work in anthropology.