Important letter to Maria Franck, his future wife, with a sketch in black ink of the painting Weidende Pferde IV (Die roten Pferde), within the text, signed “In tiefer Liebe dein Freund”
Fine autograph manuscript of the poem "Neobychayneyshee priklyuchenie" ("A Most Extraordinary Adventure"), CONTAINING DIFFERENCES FROM THE PUBLISHED VERSION, INCLUDING TO THE TITLE, and two other poems, in Russian