founder Philipp Holzmann born 1836, on foto aged 24 in year 1860, out of archives of former company Philipp Holzmann AG, as printed in yearbook of anniversary of 100 years, timespan 1849-1949, printed 1949
Former company Philipp Holzmann
CC BY 3.0
Hans Meyer-Heinrich (Hrsg.): Philipp Holzmann Aktiengesellschaft, im Wandel von hundert Jahren 1849 – 1949. Umschau Verlag Ffm, 1949, auf Seite 21