Personal narrative of travels to the equinoctial regions of ...

Selections from the works of the baron de Humboldt [as tr. ...

Humboldt's Natur- und Reisebilder. Pictures of nature and ...

Views of nature: or, Contemplations on the sublime phenomena ...

Aspects of nature, in different lands and different ...

Political essay on the kingdom of New Spain, tr. by J. ...

Letters ... to Varnhagen von Ense, together with extr. from ...

Cosmos: sketch of a physical description of the universe, ...

Vues des Cordillères, et monumens des peuples indigènes de ...

Asie centrale: recherches sur les chaînes de montagnes et la ...