000K  utf8
1500  fre
4000  Letters [from the Saxon Resident in Warsaw, August Franz von Essenius,] to [the Secretary and the Councillor of the Russian Embassy in Warsaw, Russian Envoy Extraordinary and Minister Plenipotentiary to the Ottoman Porte,] Iakov Ivanovich Bulgakov
4000  Письма к Булгакову, Якову Ивановичу
4060  14
4961  https://ditav.gbv.de/receive/lod_mods_00000859