Leopold Detoni was an amateur photographer, photojournalist and from 1922 at the latest owner of Fotofachverlag Josef Detoni in Vienna.
Rudolf Engel obtained a doctorate in philosophy from the University of Vienna in 1906. He worked as a secondary school teacher but was mainly involved in publishing and selling books and theatre items.
The Viennese book and art antique dealership Gilhofer was founded in 1883 by Hermann Gilhofer (1852–1913) as a general bookshop at Bognergasse 2 in the centre of Vienna.
On completion of his education at commercial college, Johannes Katzler worked until 1924 in his parent's company in Vienna.
Richard Lányi was born in Vienna as a Hungarian citizen on 9 December 1884. He originally had the surname Löwy. His parents Leopold Löwy and Johanna, née Spitzer, were from Pressburg, at the time administered by Hungary.
Kunst- und Musikalienhandlung L. T. Neumann, named after its founder Leopold Theodor Neumann (1804–1876), opened in 1833 at the exclusive address Kohlmarkt 11 in Vienna's 1st district.
Brüder Suschitzky – Anzengruber Verlag (Wien-Leipzig), Buchhandlung-Antiquariat-Leihbibliothek was founded in 1901 by the bookseller Philipp Suschitzky (born 14 December 1875) with his brother Wilhelm (born 22 December 1877) at Favoritenstraße 57 in Vienna's 10th district, origi
After the First World War, Marie Wolfrum (1883–1967) purchased Josef Löwy – k. u. k. Hof-Photograph, Kunst- und Verlags-Anstalt founded in 1850 with its inventory, where since 1896 she had trained and later worked as a salesperson and manager.
Paul von Zsolnay was born in Budapest in 1895 as the first son of the tobacco industrialist and Austrian consul general Adolf von Zsolnay (1866–1932) and his wife Klara Amanda, called Andy (1876–1956), née Wallerstein.