Columbia subject headings:
Frederick II, King of Prussia, 1712-1786.
Mann, Thomas, 1875-1955--Notebooks, sketchbooks, etc.
Mann, Thomas, 1875-1955--Sources.
Harvard subject headings:
Frederick II, King of Prussia, 1712-1786, in fiction, drama, poetry, etc.
Mann, Thomas, 1875-1955--Criticism and interpretation.
Princeton subject headings:
Frederick II, King of Prussia, 1712-1786.
Mann, Thomas, 1875-1955--Notebooks, sketchbooks, etc.
Mann, Thomas, 1875-1955--Sources.