Unknown description of Troitskosavsk-Kyakhta

The article is devoted to an unknown description of Troitskosavsk-Kyakhta and Maymachen contained in a letter to Ekaterina Alexandrovna Sergeeva's sister during her moving to the city for continue her studies at the gymnasium. These documents are preserved in the State Archive of the Republic of Buryatia in the named fund of M. V. and E. A. Tanskikh. During the study of the documents, a clarifying attribution of the letter was carried out, in particular, the exact date of its writing was established and comments were given, including involving some of the most famous fragments of texts dedicated to this city. This description contains some clarifications and conveys an individual emotional perception of the city.