Mikhail Drozdov.From the field of ethnography of the Smolensk province.Signed: Ryazan.

Mikhail Drozdov.From the field of ethnography of the Smolensk province.Signed: Ryazan.- 1898. -Agreement No. 24 of 02/12/2016 category 38 manuscripts of the works of members of the Russian Geographical Society and separate documents in the Smolensk province, case 19..Electronic copy source: PB