AGASSIZ, Louis (1807-1873). Lake Superior: Its Physical Character, Vegetation, and Animals, Compared with those of Other and Similar Regions. Boston: Gould, Kendall and Lincoln, 1850. 8vo. Frontispiece, numerous steel-engraved illustrations and map. Publisher's purple blind-stamped cloth, gilt-stamped spines (sunning to spine and edges of covers, discreet library label). FIRST EDITION. "The main object of the excursion... was purely scientific one, viz: the study of the Natural History of the northern shore of Lake Superior" (preface). Howes A88; Lande 1531; Sabin 506.