Employees of the embroidery factory Arnold B. Heine &amp; Co., also boys, on the star square in Arbon (canton Thurgau). Left factory, middle porter's building (?) in front of manufacturer's villa (Landquartstrasse 3), behind workers' housing estate "Heinehof". The integration into the work process turned children into adults at an early age. Colored postcard. Historical Museum Arbon.
Guggenheim &amp; Co., Zürich
Stefan Keller: Spuren der Arbeit. Von der Manufaktur zur Serverfarm. Reportage. Rotpunktverlag, Zürich 2020, <a href="//commons.wikimedia.org/wiki/Special:BookSources/978-3-85869-869-8" title="Special:BookSources/978-3-85869-869-8">ISBN 978-3-85869-869-8</a>, p. 210.