Keywords: Ottomar von Volkmer 1901 J. Székely.jpg Ottomar von Volkmer 1839 “1901 m AT chemist physicist publisher Photographische Correspondenz vol 38 nr 485 1901 02 after p 72<br />http //books google com/books id wegWAAAAYAAJ pg PA72-IA3 Dr J Székely fecit Creator Josef Székely 1898<ref>http //books google com/books id wegWAAAAYAAJ pg PA134 Photographische Correspondenz vol 38 nr 485 1901 02 p 135</ref> PD-old-auto-1923 1901 <references /> Ottomar von Volkmer Black and white portrait photographs by Josef Székely Photographische Correspondenz |