Columbia subject headings:
Ge, N. N. (Nikolaĭ Nikolaevich), 1831-1894--Correspondence.
Ge, N. N. (Nikolaĭ Nikolaevich), 1831-1894.
Harvard subject headings:
Ge, N. N. (Nikolaĭ Nikolaevich), 1831-1894--Correspondence.
Ge, N. N. (Nikolaĭ Nikolaevich), 1831-1894--Friends and associates.
Painters--Russia (Federation)--Correspondence.
Princeton subject headings:
Ge, N. N. (Nikolaĭ Nikolaevich), 1831-1894.
Painters--Soviet Union--Biography.