What has the author Hans George Guggenheim written?

Hans Georg Guggenheim (1902-1971), also known as George, was a German-American art collector and philanthropist. He is best known for being the son of Guggenheim Museum founder Solomon R. Guggenheim and first cousin to Peggy Guggenheim. While he did produce a couple of short films focused on artists, he was not an author and does not have any book credits to his name.