UTD2888563: A trip to Ulm, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888564: A trip to Ulm, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888566: A trip to Ulm, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888567: A trip to Ulm, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888572: A trip to Ulm, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888577: A trip to Eislingen, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888580: A trip to Eislingen, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888585: A guided tour through a factory of fatty acid in Witten, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888590: A guided tour through a factory of fatty acid in Witten, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888595: A guided tour through a factory of fatty acid in Witten, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888607: A guided tour through a factory of fatty acid in Witten, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888608: A guided tour through a factory of fatty acid in Witten, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888612: A guided tour through a factory of fatty acid in Witten, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888614: A guided tour through a factory of fatty acid in Witten, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888615: A guided tour through a factory of fatty acid in Witten, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888620: A guided tour through a factory of fatty acid in Witten, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888624: A guided tour through a factory of fatty acid in Witten, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888628: A guided tour through a factory of fatty acid in Witten, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888629: A guided tour through a factory of fatty acid in Witten, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888641: A guided tour through a factory of fatty acid in Witten, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888650: A guided tour through a factory of fatty acid in Witten, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888656: A guided tour through a factory of fatty acid in Witten, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888657: A guided tour through a factory of fatty acid in Witten, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888660: A guided tour through a factory of fatty acid in Witten, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888662: A guided tour through a factory of fatty acid in Witten, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888684: Craftsmen working, Witten, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888687: Craftsmen working, Witten, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888688: Craftsmen working, Witten, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888691: Craftsmen working, Witten, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888695: Craftsmen working, Witten, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888700: Craftsmen working, Witten, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888701: Craftsmen working, Witten, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888705: A factory in Witten, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888706: A factory in Witten, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888707: A factory in Witten, Germany 1930s (b/w photo) / Bridgeman Images

UTD2888710: A factory in Witten, Germany 1930s (b/w photo) / Bridgeman Images