The Invisibles is a 2017 German docudrama film co-written, co-produced and directed by Claus Räfle. The film presents the experience of four Jewish teenagers who survived the Holocaust by going into h

The Ehrich & Graetz metalworks was a factory established in 1866 in Berlin by Albert Graetz and the tradesman Emil Ehrich under the name "Lampen-Fabrik Ehrich & Graetz OHG". The logo of the firm was t