Frankfurt am Main: Repair work telephone system

On 2 May, the Frankfurt site of the German National Library will be unavailable by telephone from 9.30 - 11.30 due to repair work.

Aus der Kulturhisotischen Sammlung: Falzer – Papierprüfgerat für Papierfestigkeit, Louis Schopper, ca. 1920

From the Cultural History Collection: folder – paper-testing device for paper strength, Louis Schopper, approx. 1920 Photo: DNB, Stephan Jockel