sentences:  After the October Revolution, the family moved to Finland and then Hamburg, where Janson attended the Wilhelms Gymnasium (graduated 1932).After his German Abitur, Janson studied at the University of Munich and then at the art history program at the University of Hamburg, where he was a student of Erwin Panofsky.In 1935, at the suggestion of Panofsky, who had emigrated to the United States, Alfred Barr sponsored Janson as an immigrant, and he completed a PhD at Harvard University in 1942 (his dissertation was on Michelozzo).