Carl Johann Christian Zimmermann, known as Hans Zimmermann (8 November 1831, in Elbing – 18 March 1911, in Wandsbek, now a part of Hamburg) was a German architect and chief of works.
Source: "Zentralblatt der Bauverwaltung. Herausgegeben im Ministerium der Öffentlichen Arbeiten", Nr. 27/1911 (1. April 1911), page 169
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