BILLINGS, J. An Account of a geographical and astronomical Expedition to the Northern Parts of Russia narrated from the original papers of M. Sauer. London, 1802. 4to, contemporary half calf. Half-title, 14 engraved plates, folding map -- COXE, W. Account of the Russian Discoveries between Asia and America. London, 1803. 8vo, later cloth, worn. 5 engraved maps, 1 plate. Fourth edition -- PORTER, R.K. Travelling Sketches in Russia and Sweden. London, 1809. 2 vols. in 1, 4to, contemporary calf, rubbed, upper cover detached; some leaves slightly soiled. 41 engraved plates, most hand-colored, other tinted -- ATKINSON, T.W. Travels in the Regions of the Upper and Lower Amoor. London, 1860. 8vo, original cloth, worn; some leaves slightly soiled. Lithograph frontispiece, folding map, illustrations -- LANDSELL, H. Through Siberia. London, 1882. 2 vols., original decorated cloth. Plates and illustrations; and 4 other imperfect volumes. (10)