The Berlin Central and Regional Library (German: Zentral- und Landesbibliothek Berlin) or ZLB is the official library of the City and State of Berlin, Germany. It was established as a Foundation by two State laws, initially in 1995 and amended in 2005, combining the following institutions:

American Memorial Library (German: Amerika-Gedenkbibliothek), one of the largest public libraries in Berlin and a postwar gift from the United States in 1948 Berlin City Library (German: Berliner Stadtbibliothek), the municipal library of the city founded in 1901 Berlin Senate Library (German: Senatsbibliothek Berlin), the official library of the Berlin Senate. Berlin General Catalog (German: Berliner Gesamtkatalog or BGK) In 2011 the library system had more than 3.4 million electronic and printed media.

The Foundation is a legal deposit library for all publications appearing in Berlin. The ZLB also has significant historical and estate collections, and operates the Center for Berlin Studies in Ribbeck-House. The ZLB is a member of the Public Libraries in Berlin (VÖBB) and the Cooperative Library Network of Berlin-Brandenburg (KOBV). Partner libraries are the Centre Georges Pompidou in Paris and the Rudomino All-Russian State Library for Foreign Literature in Moscow

The website is ZLB Official Website (German) and [1] (English).

More information on the Wikipedia page [2]

See also Berlin State Library, Berlin Central and Regional Library and Berlin Document Center