The Archive of Liberalism of the Friedrich Naumann Foundation for Freedom in Gummersbach, North Rhine-Westphalia has been in existence since 1968 and is thus the oldest of the six archives of political foundations in Germany.

In addition to "classical" file material, it also catalogues printed matter, leaflets, posters and other advertising material, as well as photos, films, videos, audio tapes and digital media (including websites).

The focus of the collections is on Germany and the period after 1945; a few individual holdings date from the Weimar Republic, very few from the late 19th century.

The archive also includes a specialist scientific library with about 42,000 volumes (books, journals, printed matter, articles).

The vast majority of the holdings are indexed in a database as well as in analogue or digital finding aids and are made available to users – in compliance with the terms of protection under the Federal Archives Act.