Date	30 August/11 September 1870
Addressed to	Modest Tchaikovsky
Where written	Saint Petersburg
Language	Russian
Autograph Location	Klin (Russia): Tchaikovsky House-Museum Archive (б3, No. 6490)
Publication	П. И. Чайковский. Полное собрание сочинений, том XVII (1981), p. 212. Неизвестный Чайковский (2009), p. 167–168.
Notes	Postscript to a letter from Il'ia Tchaikovsky.

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