Alexander von Humboldt (German, –1859)

portrait of a man by alexander von humboldt

Alexander von Humboldt

Portrait of a Man

quetzal (pharomachrus mocino) by alexander von humboldt

Circle of Alexander von Humboldt

Quetzal (Pharomachrus mocino), 1803

autograph note to an unnamed correspondent in french signed "humboldt" by alexander von humboldt

Alexander von Humboldt

Autograph note to an unnamed correspondent in French signed "Humboldt"

a snake attacking a tapir, south america by alexander von humboldt

Follower of Alexander von Humboldt

A snake attacking a tapir, South America