* ''[https://www.gutenberg.org/files/6687/6687-h/6687-h.htm From the Caves and Jungles of Hindostan]'' – the translation and edition by V. V. Johnston.
* ''[https://www.gutenberg.org/files/6687/6687-h/6687-h.htm From the Caves and Jungles of Hindostan]'' – the translation and edition by V. V. Johnston.
* [[HPB-SB-6-3|''Scrapbook'', v. 6, pp. 3-54]] -- letters 10-19 published in brochure by M. Katkov in Saint Petersburg Univercity Printing House, 1880.
* [[HPB-SB-6-3|''Scrapbook'', v. 6, pp. 3-54]] -- letters 10-19 published in brochure by M. Katkov in Saint Petersburg Univercity Printing House, 1880.
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* [[HPB-SB-6|''Scrapbook'', v. 6, pp. 114-231]] include some letters from First series (letters 1-29) published in Moskovskie Vedomosti, 1879-83.