| Date | 25 March/6 April 1879 |
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| Addressed to | Petr Jurgenson |
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| Where written | Saint Petersburg |
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| Language | Russian |
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| Autograph Location | Klin (Russia): Tchaikovsky House-Museum Archive (a3, No. 2240) |
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| Publication | Not published |
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This page was last updated on 11 November 2010