The Humboldt Digital Library
To browse the documents in the Humboldt Digital Library please click the link 'Humboldt 's Documents' on the main menu! There you will find only documents, which are digitized from historic sources and published as text documents and pdf as part of our project.
Alternatively you can search a keyword, theme or synonym by clicking on the button 'Information Retrieval' or use the Google Maps under 'Space and Time Navigation'. The search is only working for documents inside the HDL. For other sources you should use an Internet search engine.