Ukrainian songs.- 152 texts, a printed brochure "On the question of Russian folk music" - No. 55 of governments.Bulletin.

Ukrainian songs.- 152 texts, a printed brochure "On the question of Russian folk music" - No. 55 of governments.Bulletin.- 1882. -Agreement No. 24 of 02/12/2016 category 16 manuscript of the works of members of the Russian Geographical Society and separate documents in the Kyiv province, case 38..Electronic copy source: PB