UTD2888694: Craftsmen working, Witten, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888711: A trip to Liegnitz, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888724: A trip to Liegnitz, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888731: A trip to Liegnitz, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888738: A trip to Liegnitz, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888772: A trip to Heilbronn, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888782: A trip to Heilbronn, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888798: A trip to Heilbronn, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888812: A trip to Heilbronn, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888822: A trip to Heilbronn, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888833: A trip to Heilbronn, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888837: A trip to Heilbronn, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888853: A stay at a health resort in Bad Rappenau, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888860: A stay at a health resort in Bad Rappenau, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888871: A stay at a health resort in Bad Rappenau, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888880: A trip to Heilbronn, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888591: A guided tour through a factory of fatty acid in Witten, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888622: A guided tour through a factory of fatty acid in Witten, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888632: A guided tour through a factory of fatty acid in Witten, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888640: A guided tour through a factory of fatty acid in Witten, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888653: A guided tour through a factory of fatty acid in Witten, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888666: A guided tour through a factory of fatty acid in Witten, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888676: A guided tour through a factory of fatty acid in Witten, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888680: A welder bonding different components, Witten, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888686: Craftsmen working, Witten, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888716: A trip to Liegnitz, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888725: A trip to Liegnitz, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888732: A trip to Liegnitz, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888752: A trip to Liegnitz, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888788: A trip to Heilbronn, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888805: A trip to Heilbronn, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888814: A trip to Heilbronn, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888830: A trip to Heilbronn, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888835: A trip to Heilbronn, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888839: A stay at a health resort in Bad Rappenau, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888847: A stay at a health resort in Bad Rappenau, Germany 1930s (b/w photo) / Bridgeman Images