Briefe über Alexander von Humboldt's Kosmos. Ein Commentar zu diesem Werke für gebildete Laien.

Vols. 1 and 3 edited by Bernhard von Cotta; v. 2. by Julius Schaller.

Lives of the brothers Humboldt, Alexander and William.

Each biography has also special t.-p.: Alexander von Humboldt: a biographical monument. By Professor Klencke. Tr. from the German, by Juliette Bauer; Life of William von Humboldt. Tr. and abridged from the German of Schlesier, by Juliette Bauer.

Alexander von Humboldt's Reisen in Amerika und Asien. Eine darstellung seiner wichtigsten forschungen,

1.-2. bd. Reisen in die aequinoctial-gegenden Amerika's.

Alexander von Humboldt : ein biographischer Denkmal /

Mode of access: Internet.

Alexander von Humboldt's Reisen in Amerika und Asien : eine Darstellung seiner wichtigsten Forschungen /

Bd. 1-2. Reisen in die aequinoctial-gegenden Amerika's -- Bd. 3- 4. Reisen im europäischen und asiatischen Russland.

Briefe von Alexander von Humboldt an Varnhagen von Ense : aus den jahren 1827 bis 1858. Nebst auszügen aus Varnhagen's tagebüchern und briefen von Varnhagen und andern an Humboldt.

Mode of access: Internet.

The travels and researchs of Alexander von Humboldt.

Mode of access: Internet.

The travels and researches of Alexander von Humboldt; being a condensed narrative of his journeys in the equinoctial regions of America, and in Asiatic Russia, together with analyses of his more important investigations.

Cover: The family library, 54.

The travels and researches of Alexander von Humboldt: being a condensed narrative of his journeys in the equinoctial regions of America, and in Asiatic Russia:--together with analyses of his more important investigations.

Tr. of:"Voyage aux regions equinoxiales du nouveau continent."

Life of Alexander von Humboldt.

Mode of access: Internet.

Briefe über Alexander von Humboldt's Kosmos. Ein commentar zu diesem werke für gebildete laien.

1. th. and 3. th., 1-2 abth.: Bearb. von Bernhard Cotta.

Gesammelte werke von Alexander von Humboldt.

Preface dates: 1808-59.

The life, travels, and researches of Baron Humboldt

Mode of access: Internet.

An illustration of the genus Cinchona : comprising descriptions of all the officinal Peruvian barks, including several new species. Baron de Humboldt's Account of the Cinchona forests of South America, and Laubert's Memoir on the different speies of Quinquina. To which are added several dissertations of Don Hippolito Ruiz on various medicinal plants of South America ... And a short account of the spikenard of the ancients ... /

Mode of access: Internet.

Lettre à M. le baron A. de Humboldt, sur l'invention de la boussole /

Includes bibliographical references.