Das Kaiser Friedrich Museum.
Das Kaiser Friedrich Museum is a 1922 German guidebook published in Berlin and Leipzig by Vereinigung Wissenschaftlicher Verleger with W. de Gruyter, issued by the Kaiser-Friedrich-Museum for visitors to Berlin's art collections. Its pictures are plain orange-and-black floor plans of museum buildings with numbered rooms, courtyards, and scale bars, useful to a designer studying architectural layout diagrams and wayfinding schematics.
