[POLAR EXPLORATION]. A group of 8 early titles related to both poles, including: LESLIE, John et al. Narrative of Discovery and Adventure in the Polar Seas and Regions. Edinburgh and London: Oliver & Boyd; Simpkin & Marshall, 1830. Folding map, several plates. Contemporary half calf. FIRST EDITION. -- HARTWIG, G. The Polar World. New York: Harper & Brothers, 1869. Illustrated. Original cloth gilt. -- MACLEAN, J. Kennedy. Heroes of the Polar Seas. London: Chambers, et al, 1910. Illustrated. Original pictorial cloth. And others. Together, 8 works in 8 volumes, all 8vo, condition generally good.