To M. V. Kiseleva, 21 June 1890. Amur pod Pokrovskoy, parokhod "Ermak".

A single short letter, not a splice of separate items: one date, one addressee, one continuous piece of correspondence, followed by the envelope/reverse-side address block (sections 6-9) in the same two-part body-plus-address layout used throughout this batch of travel letters (compare).

Dated 21 June 1890, written aboard the steamer "Yermak" on the Amur River below Pokrovskaya, one day after the letter to Alexey Plescheev sent from the same boat on 20 June – the two letters belong to the same short stretch of the river voyage, Chekhov having just completed the roughly 4,500-verst overland/horse-drawn leg of his journey across Siberia toward Sakhalin. Addressed to Maria Vladimirovna Kiseleva, a family friend and minor writer at whose estate Babkino the Chekhovs had summered in the mid-1880s; her husband, Alexey Sergeyevich Kiselev, managed the Moscow-Kursk railway, and the family’s usual residence was Voskresensk (Moscow province), the destination given on the envelope.

Content is a brief, almost formal check-in: Chekhov reports the overland stage of the trip finished, notes he is now travelling by river, and sends greetings to the whole Kiseleva family. He explains the letter’s brevity by the steamer’s shaking, which he says makes writing impossible – the same physical excuse he gives in the Plescheev letter from the same boat the day before. The sign-off lists his membership in two literary/professional societies (the Society of Russian Dramatic Writers and Opera Composers, mentioned in the body, and the Society of Lovers of Russian Letters, given as a discrete sign-off line in section 3) rather than a personal closing – a wry, mock-official flourish consistent with the light, joking register Chekhov uses with the Kiselevs elsewhere in the correspondence, not a sign of genuine formality or distance.