Reports [by the Russian Envoy Extraordinary and Minister Plenipotentiary to the Ottoman Porte, Iakov Ivanovich Bulgakov,] to [Empress] Catherine II (nos. 80–84) (Englisch)
Drafts. Reports nos. 80, 81 were published in: Dupbrovin, N.F. (ed.), Prisoedinenie Kryma k Rossii. Reskripty, pis'ma, reliatsii i doneseniia, vol. 4: 1781-1782 gg. St Petersburg, 1889, p. 819-820.