Title: Otvi͡et Sergi͡ei͡u Glagoli͡u, A. Lunacharskomu i I͡A. Tugendkholʹdu ("Apollonu")
People: I͡A. A. Tugendkholʹd (1872-1928), Anatoly Vasilievich Lunacharsky (1875-1933), Sergeĭ Glagolʹ (1855-1920)